#hydroelectric — Public Fediverse posts

creates semantic nodes and clusters 2022 #WEST #LOTHIAN #COUNCIL #ELECTION multi-search-tag-explorer.aepiot.ro/advanced-sea... #KIEWA #HYDROELECTRIC #SCHEME aepiot.com/advanced-sea... AÉPIOT: INDEPENDENT SEMANTIC WEB 4.0 INFRASTRUCTURE (EST. 2009): allgraph.ro

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creates semantic nodes and clusters 2022 #WEST #LOTHIAN #COUNCIL #ELECTION multi-search-tag-explorer.aepiot.ro/advanced-sea... #KIEWA #HYDROELECTRIC #SCHEME aepiot.com/advanced-sea... AÉPIOT: INDEPENDENT SEMANTIC WEB 4.0 INFRASTRUCTURE (EST. 2009): allgraph.ro

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Sarawak provides 25% discount on electricity bills from April to December 2026 #hydroelectric #hydropower #news #sarawak #sarawakenergy #sarawakenergyberhad

https://soyacincau.com/2026/04/17/sarawak-provides-25-discount-on-electricity-bills-from-april-to-december-2026/

From #Ethiopia To #Nepal - The #EV #Boom You Didn’t See Coming
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https://insideevs.com/news/768768/ethiopia-nepal-surprising-ev-boom/
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How rich a country is doesn’t necessarily dictate its citizens’ desire and willingness to switch to #electric power.
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“[T]aking the 'extraordinary step' in 2024 of banning imports of all gas-powered passenger vehicles - becoming the 1st nation in the world to do so.
"Crazy" would maybe be the more fitting term if a government in 2024 would #ban #ICE car imports...
"Ethiopia is leaning hard into #EVs in part because importing #fuel is expensive, and 96% of the country’s #electricity comes from clean #hydropower - a dual win for the country’s #finances & #environment."
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#honourablemention
"... In Nepal, ¾ of new #passenger #vehicles - and almost ½ of #commercial vehicles - are electric... plug-in hybrids.
Why?
Importing #oil from India became tricky after #India imposed a #blockade in 2015, the #Nepalese government was forced to shift its focus to expanding the country’s #hydroelectric #generation capability..."

Hydroelectric Dams Take a Toll on Jaguars, Tigers and Lions

As reigning apex #predators of a variety of ecosystems, #bigcats like tigers, jaguars and lions are vital for ecosystem health. Yet forest loss for hydroelectric dam building is a real threat to these majestic big cats. Aside from depriving wildlife of a home, forest loss also contributes to #climatechange. It’s ironic then that hydroelectricity, which is being developed worldwide (especially in South American and Asian countries) as an alternative energy source to fossil fuels, is a big cause of deforestation. Alternative energy is important however shouldn’t come at the cost of species under threat. Better protections are urgently needed. #Boycott4Wildlife

Often lauded as a saviour for the #environment and #climate, hydroelectric dams threaten #bigcats: #jaguars and #tigers 🐯🐅 Better protection of forests is needed to ensure endangered big #cats are protected #Boycott4Wildlife @palmoildetect.bsky.social https://wp.me/pcFhgU-9cr

Written by Tara Pirie, Postdoctoral Researcher, People and Wildlife Research Group, University of Reading. This article is republished from The Conversation under a Creative Commons license. Read the original article.

Big cats are among the most widespread top predators on Earth. Lions stalk zebra in the African savanna, tigers ambush antelope in the forests of Asia and jaguars hunt deer in the jungles of South America. They play an important role in ecosystems by regulating the numbers of these herbivores, in turn, reducing the deterioration of vegetated habitats and maintaining species diversity.

Tigers, lions and jaguars must cover large areas to find food, so they need a lot of energy. As with many large carnivores, big cats are under threat from habitat loss, which leaves them with less to eat. Their spread-out populations and slow reproductive rates make them particularly vulnerable. While the habitats in which big cats live range from boreal forests at high latitudes to tropical rainforests at the equator, the causes of habitat loss are largely the same: logging for wood and fuel, plantations, farming and urbanisation.

https://youtu.be/7VVv9oAtbVI

Aside from depriving wildlife of a home, forest loss also contributes to climate change. It’s ironic then that hydroelectricity, which is being developed worldwide (especially in South American and Asian countries) as an alternative energy source to fossil fuels, is a big cause of deforestation.

Building hydroelectric dams has caused extinctions and spread diseases in rivers globally, but the threat to ecosystems on land has largely been overlooked. In a recent study, researchers from China and Portugal investigated how existing and planned hydroelectric dams might affect two carnivores: the near-threatened jaguar (with an estimated global population of 173,000) and the endangered tiger (thought to number between 3,200 and 3,500 worldwide).

Jaguar Panthera onca

Jaguars, currently deemed Near Threatened, face a substantial habitat reduction of up to 25% in just over two decades. This decline stems from rampant deforestation for palm oil, soy,…

Tiger Panthera tigris

Fewer than 400 tigers remain in Sumatra due to deforestation for palm oil. Help save this endangered species. #Boycottpalmoil #Boycott4Wildlife

Leopard Panthera pardus

Of all the great cats prowling the wild, few inspire as much awe and fascination as the leopard Panthera pardus. Sleek, powerful, and enigmatic, leopards are found across a staggering…

The distribution of jaguars and tigers has shrunk 50% and 93% respectively, but the researchers found that hydroelectric plants pose a substantial risk of further declines. They found 164 dams that already intersect the jaguar range and 421 dams that do the same for tigers. This equates to one in five tigers that are likely to be affected by dams, compared with one in 200 jaguars. Since tiger numbers are already so low, this could have a considerable influence on the population’s capacity to recover and may even result in local extinctions.

Damning developments for big cats

Large expanses of land are flooded to create reservoirs when building hydroelectric plants in low-lying, relatively flat areas. Although tigers and jaguars can and do swim, they mainly hunt species such as deer that live on land. Sites chosen for dams typically incorporate floodplains and areas along rivers that are important for both species, since they tend to contain lots of prey.

The flooded area will force both predators and prey into surrounding areas. If the vegetation here can support the influx of herbivores, tigers and jaguars will probably persist. But if it cannot, the predators may be forced further afield in search of food, potentially drawing them into conflict with people who may kill them.

Relatively pristine habitats are under threat. The number of hydroelectric dams is set to quadruple across the jaguar’s range with a further 429 planned, while 41 are expected where tigers roam. Aside from the direct loss of habitat, these new constructions can increase the presence of people in remote areas. Roads built to access new dam sites consequently open up areas that were previously impenetrable. Roads can be a barrier to some species and kill those that try to cross. Roads can also encourage new towns and villages, which divide the habitat further.

Mitigating the damage

Where dams exist, the researchers suggest habitat loss could be limited by incorporating the surroundings into a protected area with suitable enforcement. Any new dams, though, especially in conservation areas or areas where top predators prowl, should be avoided. Sadly, most of the dams planned in Asia overlap with significant portions of the tiger’s range.

One way to mitigate the damage from building new hydroelectric plants may be to do it on slopes outside of areas that are crucial for conserving tigers and jaguars. The amount of flooded area needed to produce electricity from these plants when they’re on a slope is smaller compared to those built on lower ground, reducing the overall damage to the surrounding habitat. But impact assessments would need to confirm the plant wasn’t simply creating new issues elsewhere.

Alternative sources of energy are important for a sustainable future, but their benefits should not come at a substantial cost to species already under threat.

Written by Tara Pirie, Postdoctoral Researcher, People and Wildlife Research Group, University of Reading. This article is republished from The Conversation under a Creative Commons license. Read the original article.

ENDS

Read more animal and biodiversity stories

Marsupials thought extinct for 6,000 years found in West Papua

Two stunning marsupials thought extinct for 6000 years rediscovered in West Papua. Calls for rainforest protection even more urgent!

Do you love animals? Make every day #WorldWildlifeDay

This #WorldWildlifeDay take action for animals great and small! Reptiles insects, mammals and birds deserve better than palm oil ecocide and extinction. Make sure you Boycott palm oil

Beautiful and Doomed: Saving Bangladesh’s Langurs From Extinction

Critically endangered Phayre’s langurs and endangered capped langurs of Bangladesh, are interbreeding raising concerns about their survival, take action!

Parrot Deaths Highlight Urgent Need to Reform CITES

The legal trade is largely to blame for African grey parrots becoming endangered. Regulator CITES is broken allowing exploitation, massive reform needed now!

Jaguars and Pumas Eat More Monkeys in Damaged Forests

In fragmented forests of Mexico, big cats find it hard to locate prey ungulates instead seeking tree-dwelling #monkeys – that’s bad news for primates!

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1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

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2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Anthropologist and Author Dr Sophie Chao

Health Physician Dr Evan Allen

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

Oregon, other states target data centers' energy costs - oregonlive.com https://www.oregonlive.com/nation/2026/02/other-states-follow-oregons-lead-in-targeting-data-centers-energy-costs.html

#Oregon #Electricity #PublicUtilities #States #Consumers #Energy #BPA #DataCenters #Environment #Sustainability #Power #Activism #Resist #Protest #Solar #Wind #Renewables #Climate #HydroElectric #TechBros #Technology #LLM #AI #Profit #Loss #Affordability #Bills

Sunda Flying Lemur Galeopterus variegatus

Sunda Flying Lemur Galeopterus variegatus

Locations: Thailand, Cambodia, Vietnam, Laos, Myanmar, Peninsular Malaysia, Singapore, Brunei, Indonesia (Java, Sumatra, Kalimantan, Bali), and Borneo

The Sunda flying lemur, also known as the Malayan flying lemur or Malayan #colugo, silently glides through the tropical forests of Southeast Asia, relying on ancient forests to survive. Despite their name, they are not true lemurs, nor do they fly—they are gliders, and among the most skilful in the world. This species is experiencing population declines in several parts of their range. They are threatened by #deforestation from #timber, #palmoil plantations, and #hunting by local communities. Forest loss, particularly in #Java, #Vietnam, and #Thailand, is fragmenting their populations and endangering their survival. Use your wallet as a weapon every time you shop and protect these sensitive creatures #BoycottPalmOil #Boycott4Wildlife

https://youtu.be/NUukaAK4YSI

The elegant #Sunda flying #lemur AKA #Colugo can glide 100m through trees 🪽🕊️ in #Sumatra #Kalimantan and #Borneo. Totally reliant on trees, #palmoil is a major threat to them 😿 Fight back and🌴🩸🔥☠️🧐🚫 #Boycottpalmoil #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2026/02/08/sunda-flying-lemur-galeopterus-variegatus/

Hauntingly beautiful gliding #mammal, the Malayan #Colugo/ Sunda Flying #Lemur uses a cape-like skin membrane to slide 100’s of metres through the #rainforests of SE #Asia. Fight for them and #Boycottpalmoil 🌴🙊🤮🚜🔥❌ #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2026/02/08/sunda-flying-lemur-galeopterus-variegatus/

Appearance & Behaviour

Sunda flying lemurs are hauntingly beautiful gliding mammals, with their large, forward-facing eyes adapted for night vision and a delicate, kite-shaped membrane of skin called a patagium stretching from their neck to their fingertips, tail, and toes. This structure allows them to glide over 100 metres through the forest canopy, losing as little as 10 metres in elevation. On the ground, they are nearly helpless, but in the trees, they move with astonishing agility. These quiet, nocturnal mammals spend their days curled up in tree hollows or nestled in the dense fronds of coconut trees, becoming active at dusk when they begin foraging.

Threats

Palm oil deforestation

The widespread clearing of tropical rainforest to establish palm oil plantations is one of the greatest threats to the Sunda flying lemur. These gliders rely heavily on continuous tree canopy for movement, foraging, and breeding. When forests are fragmented or entirely removed for palm oil, flying lemurs become stranded, exposed to predators, and unable to access food or shelter. This process has caused severe habitat degradation across Peninsular Malaysia, Sumatra, and Borneo.

Human persecution and hunting

In Java and some other regions, Sunda flying lemurs are hunted by local communities, including the Baduy Tribe, who increase hunting activity every four years as part of cultural practices. Though the species yields little meat, they are still killed for consumption or perceived nuisance. Hunting disrupts already fragile populations, particularly in areas where habitat loss has already reduced numbers and isolated groups.

Logging and forest fragmentation for timber

Commercial and illegal logging contribute to the rapid degradation of forests across Southeast Asia. Even selective logging can cause fragmentation, which limits the flying lemur’s ability to glide and forces them to descend to the ground—where they are highly vulnerable to predators and human threats. Logging roads also increase human access to remote forests, further accelerating hunting and forest conversion.

Competition with invasive species

In degraded habitats and plantations, Sunda flying lemurs face increased competition for food and nesting sites from invasive and generalist species such as the Plantain Squirrel (Callosciurus notatus). These squirrels are more adaptable and can dominate food sources, leaving less for the more specialised colugo. Competition like this puts additional stress on the already fragile populations of flying lemurs, especially in fragmented or edge habitats.

Urban expansion and infrastructure development

Rapid urbanisation across Southeast Asia has resulted in the encroachment of cities and towns into previously forested areas. Roads, buildings, hydroelectric dams and agricultural expansion sever vital canopy corridors and isolate populations, making gliding impossible in many urban landscapes. As a result, Sunda flying lemurs are forced to navigate unsuitable environments, increasing their risk of vehicle collisions, electrocution from power lines, and conflict with humans.

Weak protections and lack of enforcement

Although the Sunda flying lemur is legally protected in several countries, enforcement is often weak or inconsistent. In areas like Sarawak and Java, data on current populations is outdated or incomplete, making it difficult to assess trends or plan effective conservation strategies. Without strong protections and ongoing monitoring, habitat loss and hunting will continue to drive the species toward future vulnerability or extinction.

Geographic Range

Sunda flying lemurs are found across Southeast Asia, including Thailand, Cambodia, Vietnam, Laos, southern Myanmar, Peninsular Malaysia, Singapore, Brunei, and Indonesia (Java, Bali, Sumatra, Kalimantan, and Borneo). They are patchily distributed, with population declines noted in Java and possibly Sarawak. They occur in both primary and secondary forests, and are sometimes seen in plantations and gardens—but dense forest canopy is critical for their survival. Populations in disturbed habitats are less viable due to limited gliding space and reduced food availability.

Diet

The Sunda flying lemur feeds primarily on young leaves, buds, shoots, flowers, and fruits of a wide variety of forest trees. In Bako National Park, Sarawak, they have been observed feeding on over 12 tree species, with Buchanania arborescens making up over 50% of their diet. They also consume tree sap and have even been seen licking bark for water and minerals. Interestingly, they have been recorded feeding on ants (Paratrechina longicornis) in rare cases, highlighting their adaptability in changing environments.

Mating and Reproduction

After a gestation period of about 60 days, females give birth to a single young, which clings to the mother’s belly and is cradled within the folds of the patagium. The mother’s gliding membrane acts like a living pouch, offering warmth and protection as she climbs and glides through the treetops. Not much else is known about their mating systems or breeding intervals, but juveniles stay with their mothers until they are old enough to glide on their own.

FAQs

How many Sunda flying lemurs are left in the wild?

Exact population numbers are unknown, but the species is believed to be in slow decline. Localised extinctions are suspected in parts of Java and mainland Southeast Asia due to hunting and habitat fragmentation. While still widespread, their dependence on intact forests makes them vulnerable to ongoing deforestation (Boeadi & Steinmetz, 2008).

How long do Sunda flying lemurs live?

In the wild, their lifespan is estimated to be around 10–15 years, though this can vary depending on threats and environmental conditions. Data from wild populations are limited due to their elusive, nocturnal habits (Wikipedia, n.d.).

Why are they threatened by palm oil?

Palm oil plantations destroy the lowland tropical forests that flying lemurs depend on. Unlike other adaptable mammals, colugos require dense canopy cover for safe gliding, resting, and breeding. When forests are cleared, these gliders lose their ability to navigate safely, exposing them to predators and starvation. The conversion of rainforest into monoculture plantations has led to significant declines in habitat quality across their range (Lim et al., 2013; Nasir & Abdullah, 2009).

Do Sunda flying lemurs make good pets?

Absolutely not. Sunda flying lemurs are wild animals with specialised needs. They are not domesticated, and keeping them as pets leads to extreme stress, injury, or death. Capturing these animals for trade disrupts family groups and contributes to their extinction. If you care about flying lemurs, advocate against the exotic pet trade and never support it.

What conservation efforts are underway?

National laws protect the Sunda flying lemur in many range countries, and studies have been conducted in places like Bako National Park and Singapore. However, much stronger protection is needed, particularly in habitat protection and indigenous-led conservation. Conservationists recommend protecting forest patches, especially those with >95% canopy cover, to ensure their survival (Lim et al., 2013).

Take Action!

Protect the Sunda flying lemur by choosing only products that are 100% palm oil-free. Avoiding palm oil directly combats deforestation and preserves vital canopy corridors these animals depend on. Support indigenous-led agroecology and forest protection movements. Never support the exotic pet trade or keep wild animals in captivity. Every purchase you make has the power to either destroy or safeguard their rainforest homes. #BoycottPalmOil #Boycott4Wildlife

Support Sunda Flying Lemurs by going vegan and boycotting palm oil in the supermarket, it’s the #Boycott4Wildlife

Support the conservation of this species

This animal has no protections in place. Read about other forgotten species here. Create art to support this forgotten animal or raise awareness about them by sharing this post and using the #Boycottpalmoil #Boycott4Wildlife hashtags on social media. Also you can boycott palm oil in the supermarket.

Further Information

Boeadi & Steinmetz, R. 2008. Galeopterus variegatus. The IUCN Red List of Threatened Species 2008: e.T41502A10479343. https://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T41502A10479343.en. Accessed on 06 April 2025.

Lim, N. T-L., Giam, X., Byrnes, G., & Clements, G. R. (2013). Occurrence of the Sunda colugo (Galeopterus variegatus) in the tropical forests of Singapore: A Bayesian approach. Mammalian Biology, 78(1), 63–67. https://doi.org/10.1016/j.mambio.2012.06.008

Nasir, D., & Abdullah, M. T. (2009). Foraging ecology of the Sunda colugo (Galeopterus variegatus) in Bako National Park, Sarawak, Malaysia. Malayan Nature Journal, 61(4), 285–294. https://www.researchgate.net/publication/290610443_Foraging_ecology_of_the_sunda_colugo_galeopterus_variegatus_in_bako_national_park_sarawak_malaysia

Wikipedia. (n.d.). Sunda flying lemur. Retrieved April 6, 2025, from https://en.wikipedia.org/wiki/Sunda_flying_lemur

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

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2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Anthropologist and Author Dr Sophie Chao

Health Physician Dr Evan Allen

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

Learn about other animals endangered by palm oil and other agriculture

Sunda Flying Lemur Galeopterus variegatus

Western Parotia Parotia sefilata

Capped Langur Trachypithecus pileatus

Mountain Tapir Tapirus pinchaque

Saola Pseudoryx nghetinhensis

Tucuxi Sotalia fluviatilis

Learn about “sustainable” palm oil greenwashing

Read more about RSPO greenwashing

A 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)

Rewinding a Car Alternator for 240 Volt https://hackaday.com/2026/02/03/rewinding-a-car-alternator-for-240-volt/ #hydroelectric #alternator #TechHacks

Tucuxi Sotalia fluviatilis

Tucuxi Sotalia fluviatilis

IUCN Red List Status: Endangered

Location: #Brazil, #Peru, #Colombia, #Ecuador

Found throughout the #Amazon and Solimões River systems, including major tributaries and large lakes. Their range spans lowland rainforest areas of Brazil, southeastern Colombia, eastern Ecuador, and southern Peru.

The #Tucuxi, a small freshwater #dolphin of #Peru, #Ecuador, #Colombia and #Brazil now faces a dire future. Once common throughout the Amazon River system, they are now listed as #Endangered due to accelerating population declines. Threats include drowning in fishing nets, deforestation, mercury poisoning from gold mining, #palmoil run-off, oil drilling, and dam construction. A shocking 97% decline was recorded over 23 years in a single Amazon reserve. Without urgent action, this elegant and playful river dolphin could vanish from South America’s waterways. Use your wallet as a weapon against extinction. Choose palm oil-free, and #BoycottGold #BoycottPalmOil #Boycott4Wildlife

https://youtu.be/YYvh0S3ucUI

Playful and intelligent #Tucuxi are small #dolphins 🐬 of #Amazonian rivers in #Peru 🇵🇪 #Brazil 🇧🇷 #Ecuador 🇪🇨 and #Colombia 🇨🇴. #PalmOil and #GoldMining are major threats 😿 Fight for them! #BoycottGold #BoycottPalmOil #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2025/11/23/tucuxi-sotalia-fluviatilis/

Clever and joyful #Tucuxi are #dolphins 🐬💙 endangered by #hunting #gold #mining and contamination of the Amazon river 🇧🇷 for #PalmOil #agriculture ☠️ Use your wallet as a weapon and #BoycottGold 🥇🚫 #BoycottPalmOil 🌴🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2025/11/23/tucuxi-sotalia-fluviatilis/

Appearance & Behaviour

Tucuxis are often mistaken for their oceanic dolphin cousins due to their streamlined bodies, short beaks, and smooth, pale-to-dark grey skin. But these freshwater dolphins are wholly unique—adapted to life in winding river systems where water levels rise and fall dramatically with the seasons.

What sets them apart is their remarkable intelligence and tightly knit social groups. Tucuxis are playful and curious by nature. They leap from the water in graceful arcs, sometimes spinning mid-air.

The Tucuxi, sometimes called the ‘grey dolphin’ due to their uniform colouring, resembles a smaller oceanic dolphin, with a streamlined body and slender beak. Their colour varies from pale grey on the belly to darker grey or bluish-grey along the back.

They travel in small groups of two to six, displaying coordinated swimming patterns. In rare cases, they may form groups up to 26 individuals, particularly at river confluences. Known for their agility, they leap and spin in the water with a grace that belies their size. Tucuxis are particularly drawn to dynamic habitats like river junctions, where waters mix and fish gather.

Threats

• Widespread deforestation from palm oil plantations Palm oil plantations are rapidly expanding across the Amazon, clearing vast tracts of forest that stabilise riverbanks and filter water. This deforestation leads to increased sedimentation in rivers, altering flow patterns and reducing water clarity—conditions that directly disrupt the Tucuxi’s feeding and movement. Run-off from fertilisers and pesticides used in palm oil monocultures also poisons aquatic ecosystems, harming Tucuxis other Amazonian dolphin species and the fish they rely on.
• Toxic mercury pollution from gold mining Artisanal and illegal gold mining in the Amazon releases massive quantities of mercury into the water, contaminating fish and other aquatic organisms. Tucuxis, as top predators, ingest this mercury through their prey, which accumulates in their tissues and causes neurological damage, weakened immunity, and reproductive failure. Mercury exposure is one of the most insidious threats, as it persists in ecosystems long after mining has ceased.
• Incidental drowning in fishing nets Tucuxis are frequently caught and killed in gillnets and other fishing gear as bycatch. Tucuxis and other Amazonian dolphins often inhabit the same confluence zones and productive fishing grounds targeted by local communities, making entanglement almost inevitable. Many carcasses are never recovered, having either been discarded by fishers or lost to river currents, meaning actual mortality rates are likely far higher than reported.
• Deliberate hunting for use as fish bait Though illegal, Tucuxis continue to be targeted and killed in parts of Brazil, especially near the Mamirauá and Amana Reserves, where they are used as bait in the piracatinga (catfish) fishery. This brutal practice involves harpooning or netting dolphins and using their flesh to lure fish, often alongside the killing of Botos. Despite a national ban, weak enforcement and ongoing demand mean this threat persists in remote and lawless regions.
• Illegal fishing with explosives and toxins In certain areas, particularly in Brazil and Peru, fishers use home-made explosives and poisoned bait to stun or kill fish en masse. These destructive methods harm or kill Tucuxis who are attracted by the sudden appearance of dead or stunned prey. The concussive force of explosions and the ingestion of poisoned prey result in slow, agonising deaths for affected dolphins.
• Construction of hydroelectric dams Dams fragment Tucuxi populations by blocking their movement along river corridors, reducing access to feeding and breeding grounds. These projects alter seasonal water flow, raise water temperatures, and flood critical habitats—conditions that significantly disrupt dolphin ecology. Brazil alone has 74 operational dams in the Amazon basin, with over 400 more planned, posing a long-term existential threat to freshwater cetaceans.
• Run-off and contamination from palm oil, soy and meat agriculture In addition to habitat loss, palm oil and soy plantations along with cattle ranching generates enormous volumes of chemical-laden waste, which enters waterways and poisons aquatic life. This pollution affects Tucuxis both directly and indirectly—exposing them to harmful substances and killing off sensitive fish species. As plantations replace biodiverse forests, the ecosystem becomes less resilient, accelerating the decline of species like the Tucuxi.
• Bioaccumulation of heavy metals and industrial pollutants Tucuxis, like many river dolphins, suffer from exposure to persistent organic pollutants such as PCBs, DDT, and flame retardants, as well as heavy metals like lead and cadmium. These toxins accumulate in dolphin tissues over time, weakening their immune systems, interfering with reproduction, and making them more vulnerable to disease. Contaminants originate from industrial waste, agriculture, and mining, and are now widespread across the Amazon basin.
• Habitat fragmentation from infrastructure and oil development Roads, oil pipelines, and shipping corridors criss-cross many parts of the Tucuxi’s range, slicing through their habitat and increasing the risk of collisions with boats. These developments also bring noise pollution, which can interfere with echolocation and communication. Fragmentation leads to isolated subpopulations, reducing genetic diversity and making recovery more difficult.

Geographic Range

The Tucuxi inhabits the Amazon River basin, spanning: Brazil, Peru, Colombia, Ecuador These river dolphins occur as far west as southern Peru and eastern Ecuador, and as far north as southeastern Colombia. They are notably absent from Bolivia’s Beni/Mamoré system, the Orinoco basin, and upper reaches above major waterfalls or rapids.

Their range includes wide, deep rivers and lakes, avoiding turbulent rapids and shallow areas. Despite overlapping with the Amazon River Dolphin (Inia geoffrensis), Tucuxis do not enter flooded forest habitats and stay closer to main river channels.

Diet

Tucuxis feed on more than 28 species of small, schooling freshwater fish, including members of the characid, sciaenid, and siluriform families. During the dry season, fish are concentrated in shrinking waterways, making them easier to catch. In contrast, flooding season disperses prey into forested areas, beyond the Tucuxi’s reach. They prefer to feed at river junctions and along confluences, where nutrient-rich waters concentrate fish populations.

Mating and Reproduction

Little is known about their mating behaviours. However, individuals appear to remain within familiar ranges for many years, and females likely give birth to a single calf after a long gestation. Calves are dependent for an extended period, learning complex navigation and foraging skills in rapidly changing river systems. The estimated generation length is 15.6 years.

FAQs

How many Tucuxis are left in the wild?

There is no comprehensive global population estimate. However, surveys from 1994–2017 in Brazil’s Mamirauá Reserve show a 7.4% annual decline—amounting to a 97% drop over three generations (da Silva et al., 2020). If this trend reflects the wider Amazon basin, the species could be on the brink of collapse.

How long do Tucuxis live?

Exact lifespans are unknown, but based on reproductive data and life history modelling, their generation length is around 15.6 years (Taylor et al., 2007), suggesting natural lifespans of 30–40 years.

How are palm oil and gold mining affecting Tucuxis?

Out-of-control palm oil expansion results in massive deforestation and run-off, clogging rivers with sediment and toxic agrochemicals. Gold mining adds mercury into aquatic ecosystems, where it bioaccumulates in fish—Tucuxis’ main food source. These pollutants cause reproductive harm, neurological damage, and immune system failure in dolphins.

Do Tucuxis make good pets and should they be kept in zoos?

Absolutely not. Tucuxis are intelligent, wild animals. Keeping them in captivity is deeply cruel and has no conservation benefit. Wild capture destroys families and can devastate local populations. If you care about these dolphins, say no to the exotic pet trade and the cruel zoo trade.

What habitats do they prefer?

Research in Peru’s Pacaya-Samiria Reserve shows that Tucuxis prefer river confluences and wide channels, particularly during the dry season when fish density is higher (Belanger et al., 2022). Feeding activity is especially concentrated in areas where whitewater rivers meet blackwater tributaries, creating nutrient-rich hotspots.

Take Action!

The Tucuxi is vanishing before our eyes. To protect them:

• Boycott palm oil and gold products linked to Amazon destruction.

• Choose fish-free and vegan products to reduce pressure on river ecosystems.

• Support indigenous-led conservation across the Amazon.

• Campaign for a ban on destructive dams, and the end of illegal fishing.

#BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

Support the Tucuxi by going vegan and boycotting palm oil in the supermarket, it’s the #Boycott4Wildlife

Support the conservation of this species

This animal has no protections in place. Read about other forgotten species here. Create art to support this forgotten animal or raise awareness about them by sharing this post and using the #Boycottpalmoil #Boycott4Wildlife hashtags on social media. Also you can boycott palm oil in the supermarket.

Further Information

Belanger, A., Wright, A., Gomez, C., Shutt, J.D., Chota, K., & Bodmer, R. (2022). River dolphins (Inia geoffrensis and Sotalia fluviatilis) in the Peruvian Amazon: habitat preferences and feeding behaviour. Latin American Journal of Aquatic Mammals, 17(1). https://doi.org/10.5597/lajam00268

da Silva, V., Martin, A., Fettuccia, D., Bivaqua, L. & Trujillo, F. 2020. Sotalia fluviatilis. The IUCN Red List of Threatened Species 2020: e.T190871A50386457. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T190871A50386457.en. Accessed on 06 April 2025.

Monteiro-Neto, C., Itavo, R. V., & Moraes, L. E. S. (2003). Concentrations of heavy metals in Sotalia fluviatilis (Cetacea: Delphinidae) off the coast of Ceará, northeast Brazil. Environmental Pollution, 123(2), 319–324. https://doi.org/10.1016/S0269-7491(02)00371-8

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

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2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Read more

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Read more

Anthropologist and Author Dr Sophie Chao

Read more

Health Physician Dr Evan Allen

Read more

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

Learn about other animals endangered by palm oil and other agriculture

Frill-Necked Lizard Chlamydosaurus kingii

Keep reading

Grey Crowned Crane Balearica regulorum

Keep reading

Ecuadorean Viscacha Lagidium ahuacaense

Keep reading

Southern Pudu Pudu puda

Keep reading

Blue-streaked Lory Eos reticulata

Keep reading

Blonde Capuchin Sapajus flavius

Keep reading

Learn about “sustainable” palm oil greenwashing

Read more about RSPO greenwashing

A 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)

#agriculture #amazon #amazonRainforest #amazonia #amazonian #animalCruelty #animals #boycott4wildlife #boycottgold #boycottmeat #boycottpalmoil #brazil #colombia #dams #deforestation #dolphin #dolphins #ecuador #endangered #endangeredSpecies #forgottenAnimals #gold #goldMining #goldmining #humanWildlifeConflict #hunting #hydroelectric #mammal #mining #palmOil #palmOilDeforestation #palmoil #peru #poaching #saynotogold #tucuxi #tucuxiSotaliaFluviatilis #vegan

More visual memories from recent multi-day sailing adventures around the #SalishSea 😊

#SailAway #CoastalBC #Adventures #PacificNorthwest #Cascadia #PNW #BritishColumbia #PacificOcean #sailboat #wildlife #AbandonedPlaces #landscape #seascape #Summer #marine #nautical #LifeIsForLiving #MakingMemories #hydroelectric #BChistory #BCHydro

US National Inventory Of Dams [NID] [open spatial data]
--
H/T Data Is Plural https://www.data-is-plural.com/
--
“The National Inventory of Dams [https://nid.sec.usace.army.mil/] [is a is a congressionally authorized] ‘document[ing] all known dams in the U.S. and its territories that meet certain criteria’ related [https://nid.sec.usace.army.mil/#/about-the-nid/mission] to the dam’s height, reservoir size, and likely impacts of its ‘failure or mis-operation.’..."
#GIS #spatial #mapping #fedscience #NationalInventoryofDams #NLDI #US #USA #dams #criteria #inventory #opendata #downloadable #risk #hazard #infrastructure #energy #HEP #waterresources #hydroelectric #webmap #USACE #operations #dataset #safety #inspection #uses
@USACE @FEMA @EPA

Study Warns Of Glacial Outburst [GLOF] Risks From Hydropower Projects In The Himalayas, Caution Comes After Nod To Resume Testa III [Hydroelectric Project, India]
--
https://timesofindia.indiatimes.com/india/study-warns-of-glacial-outburst-risks-from-hydropower-projects-in-himalayas-caution-comes-after-nod-to-resume-teesta-iii/articleshow/117753719.cms <-- shared media article
--
https://doi.org/10.1126/science.ads2659 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #GLOF #Sikkim #Himalayas #India #climatechange #flood #flooding #risk #hazard #hydroelectric #HEP #energy #TestaIII #testa #dam #failure #engineeringgeology #engineering #construction #multihazard #melting #glacier #glacial #climatechange #weather #lowpressuresystem #planning #glaciallakes #lakes #water #hydrology #naturaldisaster #Lhonak #downstream #elevation #steepness #slope #geometry #infrastructure #publicsafety #lateral #moraine #sedimentation #cost #economics #remotesensing #model #modeling #imagery #outburstflood #overtopping #hydropower #vulnerable #humanimpact #policy #riskmanagement #warning #rainfall #precipitation

Hydroelectric Generator Gets Power From Siphoning https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning - Siphons are one of those physics phenomena that, like gyroscopes, non-Newtonian fl... - https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning - Siphons are one of those physics phenomena that, like gyroscopes, non-Newtonian fl... - https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning - Siphons are one of those physics phenomena that, like gyroscopes, non-Newtonian fl... - https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning - Siphons are one of those physics phenomena that, like gyroscopes, non-Newtonian fl... - https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Hydroelectric Generator Gets Power From Siphoning - Siphons are one of those physics phenomena that, like gyroscopes, non-Newtonian fl... - https://hackaday.com/2025/01/21/hydroelectric-generator-gets-power-from-siphoning/ #hydroelectric #greenhacks #generator #hubmotor #impeller #offgrid #siphon #ebike #hydro

Honduras: Anti-mining activist Juan Lopez shot dead

#JuanLopez is the fourth member of an #environmental #activism group based in in #Tocoa to be killed since 2023.

President #XiomaraCastro condemned the murder and has ordered an investigation.

September 16, 2024

"An #AntiMining #EnvironmentalActivist in #Honduras who protested to preserve #TropicalForests and rivers was killed over the weekend, even after warnings to better ensure his safety.

"Juan Lopez, 46, was gunned down as he left church Saturday in the northeastern town of Tocoa, police said on Sunday.

"Honduran President Xiomara Castro condmened the apparent murder of Lopez, a member of the Libre party she's allied to, in comments online.

"'We condemn the vile murder of our comrade and environmental leader Juan Lopez in Tocoa, Colon,' she said. 'I have ordered that all the capabilities of law enforcement be used to clarify this tragedy and identify those responsible.'

Multiple members of Lopez's enviromental organization killed

"Lopez belonged to the Municipal Committee for the Defense of Common and Public Goods, an environmental organization in Tocoa on the country's Atlantic coast.

"Three other members of the group were killed last year in what the organization saw as retaliation.

"The group had suffered threats and harassment for years amid efforts to preserve the #Guapinol and #SanPedro rivers, and the #CarlosEscaleras #Nature Reserve, as the presence of #mining and #hydroelectric companies increased.

"Honduran Attorney General Johel Zelaya said the 'reprehensible' murder would not go unpunished, and paid tribute to Lopez's #activism.

"'His life was an example of struggle. He never gave up in his incessant battle, hand-in-hand with the people to preserve natural resources,' Zelaya said on X.

Lopez aware of risks of his activism

"An outspoken member of the ruling #LibreParty, Lopez had recently publicly called for the resignation of Libre officials caught on video negotiating bribes with drug traffickers in 2013.

"Carlos Zelaya, a brother-in-law of president Castro, was caught up in that video. He resigned his seat in congress after admitting he took part in that meeting with drug gangsters.

"'If you leave home, you always have in mind that you do not know what might happen, if you are going to return,' Lopez had said in 2021 when speaking of his activism with AFP.

"Lopez had also raised the alarm himself earlier in the year, saying he had noticed two people on motorbikes observing him in locations around his home.

Activist deaths high in Latin America

"Global Witness, a British NGO, says Honduras is one of the world's most dangerous countries for environmental activists.

"#LatinAmerica accounted for 85% of all the world's environmentalists who were killed last year, with 18 deaths registered in Honduras, according to #GlobalWitness.

"The United Nations resident coordinator in Honduras, Alice Shackelford, said Lopez had been threatened for his activism and praised his determination to stand up to powerful interests.

"'We condemn the terrible murder of Juan Lopez, a human rights defender threatened for his work,' she said in a post."

km/msh (AFP, Reuters)

https://www.dw.com/en/honduras-anti-mining-activist-juan-lopez-shot-dead/a-70223466

#JusticeForJuan #GuapinolRiver #WaterDefender #SaveTheForests #DefendTheSacred
#NoMiningWithoutConsent #Greenwashing #WaterIsLife #SaveTheRivers #EMCO #InversionesLosPinares
#MunicipalCommitteeForTheDefenseOfCommonAndPublicGoods

The #expulsion comes in the midst of an anti-corruption drive known as the #BlazingFurnace launched by #CommunistParty General Secretary Nguyen Phu Trong, in which dozens of officials and business partners of politicians have been caught up.

The high-profile purges have roiled #financial markets and #ForeignInvestor confidence and critics say the campaign has been used to target factional rivals.

Van is well-known for speaking out against state agencies and organizations.

In May 2020, he asked the chairman of the National Assembly to consider implementing parliament’s supreme supervision over court operations, through the case of death row prisoner Ho Duy Hai. He said that the Supreme Court’s verdict on Hai’s appeal was unconvincing as there were many unclear issues that concerned the public.

In November 2022, Van said National Assembly delegates needed to discuss and debate more, not just read aloud.

In November 2023, Van spoke about the #DaiNinh #hydroelectric plant project in #LamDong province. He alleged #bribes were given to government officials.

https://www.rfa.org/english/news/vietnam/communist-party-expels-politician-07182024214329.html

#AsianMastodon #Vietnam #AsiaPolitics #ASEAN #AsiaPacific #TootSEA #GlobalSouth #SouthEastAsia

Like fish in a barrel? Yup!

Here is a tank full of stunned fish being moved upstream about 2km away from the #nbPower #mactaquac #hydroElectric #dam.

The trucks run 18h/day for over a month, moving fish upriver for season.

At first, it looked like the fish were all dead! They were unmoving and floated or sank. One by one, they shook awake and swam off!

June 2021

@zekuzelalem Thank you for the informative #InfoThread on this controversial, hard-to-follow, ambitious & potentially transformative #infrastructure project.

#hydroelectric #dam #water #irrigation #Ethiopia #Sudan #Egypt #Africa

BTW @gilesgoat, this is the Surge Pond (or "Terrifying hole of certain horrific death" as I prefer to call it) at #Dinorwig #hydroelectric power station near #Llanberis, #Wales. I've been on a tour inside the power station several times. It's absolutely fascinating and awesome (not a word I use lightly). At peak, water flows through the turbines at 360m3 per second - the equivalent volume of a typical 25-meter swimming pool.

$20 Million Crypto Mining Farm to Be Built at Hydropower Plant in Kyrgyzstan - Kyrgyzstan intends to build a new facility for cryptocurrency mining at one of the... - https://news.bitcoin.com/20-million-crypto-mining-farm-to-be-built-at-hydropower-plant-in-kyrgyzstan/ #surpluselectricity #hydroelectric #cryptomining #powerstation #centralasia #electricity #cryptofarm #investment #kyrgyzstan #miningfarm #powerplant #capacity #investor #mining #energy #power #hpp

#LUMI #Supercomputer Secures 3rd Spot in #Top500, Becomes Fastest in #Europe at 309 petaflops. The GFlops/Watts ratio for LUMI is 51.38, making it one of the greenest #supercomputers in the world, reaching seventh spot on the new #Green500! CSC’s #datacenter in Kajaani, Finland, where LUMI is placed, is one of world’s most eco-efficient data centers. Uses 100% #hydroelectric energy, and its waste heat can be reused to heat up the surrounding houses in city of Kajaani.
https://www.hpcwire.com/off-the-wire/lumi-supercomputer-secures-3rd-spot-in-top500-becomes-fastest-in-europe/

Pumped hydro: A nice visual guide to a popular method of storing electricity
https://www.nytimes.com/interactive/2023/05/02/climate/hydroelectric-power-energy.html?te=1&nl=the-morning&emc=edit_nn_20230502
#hydroelectric #globalwarming #electricity #pumpedhydro #energy #solar #wind #+

Mapped - Biggest Sources of Electricity by State and Province [North America]
--
https://www.visualcapitalist.com/biggest-sources-of-electricity-by-state-and-province/ <-- article
--
“On a national scale, the United States and Canada rely on a very different makeup of sources to generate their electricity.
The U.S. primarily uses natural gas, coal, and nuclear power, while Canada relies on both hydro and nuclear. That said, when zooming in on the province or state level, individual primary electricity sources can differ greatly…”
#GIS #spatial #mapping #NorthAmerica #Canada #USA #states #provinces #representation #energy #energysolutions #electricity #oil #gas #power #naturalgas #coal #hydroelectricity #hydroelectric #nuclearenergy #nuclearpower #nuclear #consumerism #sources #solutions #electricalengineering #electricalservices
#VisualCapitalist

The #EnergyVault is a Dumb Idea. Here's Why.

https://www.youtube.com/watch?v=iGGOjD_OtAM&ab_channel=AdamSomething

#PowerGeneration #GreenPower #GreenElectricity #Hydro #HydroElectric #HydroElectricPower #RenewableEnergy #LowCarbon

Black Bearded Saki Chiropotes satanas

Black Bearded Saki Chiropotes satanas

Red List Status: Endangered

Locations: North-eastern Amazon, Brazil (specifically from the Tocantins River in Pará east to around the Grajaú River in Maranhão)

Beneath the towering canopy of the Amazon’s north-eastern forests, the Black Bearded Saki moves with quiet purpose, their distinctive shaggy beard and robust body a testament to their resilience in a world under siege. The air is thick with the scent of damp earth and the distant calls of unseen creatures, but the forest is changing—#roads, #dams, and #agriculture are carving scars across the landscape, fragmenting the Black Bearded Saki’s ancestral home. The black bearded saki’s survival is threatened by relentless deforestation and hunting, their fate bound to the fate of the forest—fight for their survival every time you shop #BoycottPalmOil #Boycott4Wildlife.

https://youtu.be/Cjh19F9Ux9o

Black Bearded #Sakis are #endangered large #monkeys 🐒 endemic to #Brazil 🇧🇷 #SouthAmerica they are #endangered by #timber #palmoil #hydroelectric dam #deforestation. Help save them and #Boycottpalmoil 🌴🩸🔥🙊⛔️ #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/08/28/black-bearded-saki-chiropotes-satanas/

Appearance and Behaviour

Black bearded sakis are medium-sized primates, their bodies draped in thick, dark fur and their faces framed by a distinctive, flowing beard. Adults typically measure around 50 centimetres in length, with a tail nearly as long as their body, and weigh between 2.5 and 3.5 kilograms. Their robust build and strong limbs allow them to move with surprising agility through the upper canopy, where they spend most of their lives. The black bearded saki’s most remarkable feature is their powerful jaw and specialised teeth, which enable them to crack open the hard shells of unripe fruits to reach the nutritious seeds inside. This adaptation makes them one of the most efficient seed predators and seed dispersers in the Amazon, and their foraging habits play a vital role in shaping the forest ecosystem.

Black bearded sakis live in groups of up to 40 individuals, though smaller groups are more common. They are highly social, with strong bonds between group members, and communicate through a variety of vocalisations, including chirps, whistles, and alarm calls. Their days are spent foraging, resting, and moving through the canopy, rarely descending to the forest floor. The black bearded saki’s presence is often marked by the sound of falling fruit and the rustle of leaves as they leap from branch to branch.

Threats

The greatest risks for the future survival of the Black Bearded Saki, also known as the Black Cuxiú are the loss and fragmentation of their habitat and hunting pressure.

IUCN Red list

Palm oil, meat, and soy deforestation

The black bearded saki is classified as Endangered on the Red List, with the loss and fragmentation of their forest habitat the primary threat to their survival. In the north-eastern Amazon, large-scale infrastructure projects—such as highways and the Tucurúi Dam—have destroyed vast tracts of forest, while smaller-scale logging and agriculture continue to fragment the remaining habitat. The forest, once a living, breathing entity, is being replaced by roads, fields, and settlements, leaving only isolated patches where the black bearded saki can survive. This fragmentation isolates populations, reduces genetic diversity, and increases the risk of disease and local extinction. The black bearded saki’s ability to adapt to habitat loss is limited, and their long-term survival depends on the protection and restoration of connected forest landscapes.

Hunting and poaching

Hunting for bushmeat is a persistent threat to the black bearded saki, with individuals targeted for their meat and, in some cases, their tails, which are used as dusters. The influx of people into previously uninhabited areas of the Amazon has increased hunting pressure, and the loss of habitat makes sakis more vulnerable to capture. Hunting disrupts social groups, reduces population numbers, and threatens the genetic health of remaining populations. The black bearded saki is already locally extinct in much of its original range, and continued hunting could push them closer to extinction.

Habitat fragmentation and climate change

The fragmentation of the Amazon’s forests has profound effects on the black bearded saki. Small, isolated forest patches limit the availability of food and mates, and groups living in these fragments often show reduced movement and vocalisation, as well as increased resting. Population densities in small fragments can increase, leading to higher rates of disease and parasite transmission. Climate change adds further pressure, altering rainfall patterns and the availability of key food sources. The black bearded saki’s world is becoming hotter, drier, and less predictable, with the forests they depend on shrinking year by year.

Diet

Black bearded sakis are among the most specialised seed dispersers in the Amazon, with seeds making up the majority of their diet. They spend at least 75% of their feeding time consuming seeds from more than 50 different fruit species, using their powerful jaws and specialised teeth to crack open hard-shelled fruits that few other animals can access. Their diet also includes ripe fruit, flowers, leaf stalks, and arthropods such as caterpillars, termites, and gall wasps. The black bearded saki’s foraging habits are closely tied to the seasonal availability of fruit, with peak feeding activity during the rainy season when many trees are fruiting. Their role as seed predators helps shape the composition of the forest, and their ability to exploit hard-shelled fruits gives them a unique niche in the ecosystem.

Reproduction and Mating

Little is known about the reproductive habits of black bearded sakis in the wild, but observations in captivity and from related species suggest that births occur at the beginning of the rainy season, typically in December or January. Gestation is estimated to last four to five months, and females give birth to a single infant. The mother is the primary caregiver, nursing and carrying her young until the infant is weaned at around three months of age. After weaning, infants remain close to their mothers for protection, and strong social bonds within the group help ensure the survival of young sakis. The reproductive success of black bearded sakis is closely tied to the availability of food and the stability of their forest home.

Geographic Range

The black bearded saki is endemic to the far eastern Amazon in Brazil, with a range restricted to a relatively small region from the Tocantins River in Pará east to around the Grajaú River in Maranhão. They inhabit primary terra firme forests and, occasionally, regenerating forests, rarely descending to the forest floor. The natural home range of a black bearded saki group can vary from 200 to 250 hectares, but habitat loss and fragmentation have reduced the size and connectivity of these ranges. The black bearded saki is already locally extinct in much of its original range, and the remaining populations are increasingly isolated and vulnerable.

FAQs

How many black bearded sakis are left?

Estimates suggest that fewer than 2,500 mature black bearded sakis remain in the wild, with populations continuing to decline due to habitat loss, fragmentation, and hunting. The species is already locally extinct in much of its original range, and the remaining individuals are scattered across increasingly isolated forest fragments.

What are the characteristics of the black bearded saki?

The black bearded saki is a medium-sized primate with thick, dark fur and a distinctive, flowing beard. Adults typically measure around 50 centimetres in length, with a tail nearly as long as their body, and weigh between 2.5 and 3.5 kilograms. They are highly specialised seed predators, with powerful jaws and unique dentition that allow them to crack open hard-shelled fruits. Black bearded sakis live in social groups, communicate through a variety of vocalisations, and spend most of their lives in the upper canopy.

What do black bearded saki eat?

Black bearded sakis are highly specialised seed predators, with seeds making up the vast majority of their diet. They spend at least 75% of their feeding time consuming seeds from more than 50 different fruit species, using their robust jaws and specialised teeth to crack open hard-shelled fruits that many other animals cannot access. Their diet also includes fleshy fruits and, to a lesser extent, insects. They are particularly fond of plants from the Sapotaceae, Lecythidaceae, and Chrysobalanaceae families. This dietary flexibility allows black bearded sakis to adapt to changing forest conditions, but their reliance on certain tree species makes them vulnerable to habitat loss and selective logging.

Is the black bearded saki a monkey?

Yes, the black bearded saki is a monkey—specifically, a New World monkey native to the Amazon rainforest. Unlike apes, monkeys have tails, and the black bearded saki’s long, muscular tail helps them balance as they move through the trees. They are part of the bearded saki group, known for their robust build, thick fur, and specialised feeding habits.

What are the main threats to the survival of the black bearded saki?

The main threats to the survival of the black bearded saki are habitat loss and fragmentation caused by infrastructure projects, logging, and agriculture, as well as hunting for bushmeat. The loss of forest isolates populations, reduces genetic diversity, and increases the risk of disease and local extinction. Hunting further reduces population numbers and disrupts social groups.

How does habitat fragmentation affect the black bearded saki?

Habitat fragmentation isolates black bearded saki groups, reducing the availability of food and mates and increasing the risk of disease. Groups living in small, isolated forest patches often show reduced movement and vocalisation, as well as increased resting. Population densities in small fragments can increase, leading to higher rates of disease and parasite transmission. The black bearded saki’s ability to adapt to habitat loss is limited, and their long-term survival depends on the protection and restoration of connected forest landscapes.

Do black bearded sakis make good pets?

Black bearded sakis do not make good pets. Captivity causes extreme stress, loneliness, and early death for these highly social, intelligent primates. The pet trade and hunting for bushmeat rip families apart and fuel extinction, as infants are stolen from their mothers and forced into unnatural, impoverished conditions. Protecting black bearded sakis means rejecting the illegal pet trade and supporting their right to live wild and free in their forest home.

Where do bearded sakis live?

Bearded sakis, including the black bearded saki, are endemic to the Amazon rainforest in South America. The black bearded saki specifically inhabits a small region in north-eastern Brazil, from the Tocantins River in Pará east to the Grajaú River in Maranhão. They prefer primary tropical rainforests with dense, continuous canopies, which provide safety from predators and abundant food sources. Their natural home ranges can vary from 200 to 250 hectares, but habitat fragmentation has dramatically reduced the size and connectivity of these ranges. Today, black bearded sakis are found only in scattered forest fragments, making their survival increasingly precarious.

What is the lifespan of a black bearded saki?

The lifespan of the black bearded saki is estimated to be up to 18 years in the wild, with sexual maturity typically reached at around 4 years of age. Females usually give birth every two years, and the long interval between births suggests a relatively slow reproductive rate. Closely related bearded saki species have been known to live up to 20 years in the wild, though specific data for the black bearded saki remains limited. Their longevity is closely tied to the quality and continuity of their forest habitat, with threats such as habitat destruction and hunting potentially reducing average lifespans in fragmented environments

Take Action!

Use your wallet as a weapon and #BoycottPalmOil #Boycott4Wildlife. Support indigenous-led conservation and agroecology. Reject products linked to deforestation, mining, and the illegal wildlife trade. Adopt a #vegan lifestyle and #BoycottMeat to protect wild and farmed animals alike. Every choice matters—stand with the black bearded saki and defend the forests of the Amazon.

You can support this beautiful animal

There are no known conservation activities for this animal. Share out this post to social media and join the #BoycottPalmOil #Boycott4Wildlife on social media to raise awareness

Further Information

Boubli, J. P., de Lima, E. M., Silva, M. N. F., & Silva Júnior, J. S. (2009). Bearded sakis in south-eastern Amazonia—back from the brink? Oryx, 43(2), 283–288. https://www.cambridge.org/core/journals/oryx/article/bearded-sakis-in-southeastern-amazoniaback-from-the-brink/703BC0853B02C2FB8017AD73EDA6BAB8

Neprimateconservancy.org. (n.d.). Black Bearded Saki, Chiropotes satanas. https://neprimateconservancy.org/black-bearded-saki/

Port-Carvalho, M., Muniz, C.C., Fialho, M.S., Alonso, A.C., Jerusalinsky, L. & Veiga, L.M. 2021. Chiropotes satanas (amended version of 2020 assessment). The IUCN Red List of Threatened Species 2021: e.T39956A191704509. https://dx.doi.org/10.2305/IUCN.UK.2021-1.RLTS.T39956A191704509.en. Downloaded on 05 June 2021.

van Roosmalen, M. G. M., Mittermeier, R. A., & Fleagle, J. G. (1988). Diet of the northern bearded saki (Chiropotes satanas chiropotes): A neotropical seed predator. American Journal of Primatology, 14(1), 11–35. https://doi.org/10.1002/ajp.1350140103

Veiga, L. M., & Ferrari, S. F. (2007). Conservation status of the black-bearded saki Chiropotes satanas in Maranhão, Brazil. International Journal of Primatology, 28(2), 347–358. https://doi.org/10.1007/s10764-007-9146-6

Wikipedia. (n.d.). Black bearded saki. https://en.wikipedia.org/wiki/Black_bearded_saki

Black Bearded Saki Chiropotes satanas

How can I help the #Boycott4Wildlife?

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The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

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3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

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Tana River Mangabey Cercocebus galeritus

Tana River Mangabey Cercocebus galeritus

Red List: Critically Endangered

Location: Kenya

This species is found only along a fragmented 60 km stretch of floodplain forest near the lower Tana River in south-eastern Kenya.

The Tana River Mangabey Cercocebus galeritus is a long-faced and slender old world monkey of #Kenya listed as Critically Endangered due to ongoing habitat destruction, dam construction, logging, and the degradation of floodplain forest ecosystems. Once protected by the Tana River #Primate Reserve, these #monkeys despite being key seed dispersers in their ecosystem are now more vulnerable than ever after the legal de-gazetting of their habitat. With only around 1,000 individuals remaining, this highly social and adaptable primate faces a devastating future unless urgent action is taken. Use your wallet as a weapon to end the destruction of their home. #BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

Tana River Mangabeys🐒 are an icon of #Kenya 🇰🇪. These svelte, intelligent #primates are critically endangered in #Kenyan #forests due to dams, forest #fires and #agriculture. Help them and 🌴🔥🧐⛔️#Boycott4Wildlife at the supermarket @palmoildetect https://palmoildetectives.com/2021/03/29/tana-river-mangabey-cercocebus-galeritus/

Male Tana River #Mangabey #monkeys perform ‘whoop-gobble’ vocalisations at dawn. They’re critically #endangered by #agriculture #deforestation, hunting and hydroelectric #dams. Fight back for them and 🌴🔥🤮☠️🚜🧐🚫#Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/03/29/tana-river-mangabey-cercocebus-galeritus/

Appearance and Behaviour

Tana River Mangabeys are medium-sized monkeys with long, light grey fur and cream-coloured underparts. Their forearms and hands are darker, and their dark grey face is framed by a prominent crest of fur parted down the centre. Their distinctive white eyelids contrast against their darker skin, playing a key role in their complex communication.

These monkeys are diurnal and semi-terrestrial, often seen foraging on the ground, though they sleep high in tree canopies for safety. Social groups are large and structured, with up to 36 individuals living together in mixed-sex groups. Males often perform territorial calls in the early morning, and loud “whoop-gobble” vocalisations can carry over a kilometre, helping to space out neighbouring groups. Their behaviour is deeply affected by food availability: in times of plenty, groups interact peacefully, while in lean months, they grow more territorial.

Diet

Tana River Mangabeys are primarily frugivorous monkeys but display great dietary flexibility. Around 46% of their annual diet consists of seeds, with another 25% made up of fruit. They also consume stems, young leaves, fungi, and insects. During the dry season, when food is scarce, they range further and diversify their diet.

They rely heavily on trees like Ficus sycomorus and Phoenix reclinata for food, both of which fruit at times when other resources are limited. Their powerful jaws and thick molar enamel allow them to crack tough seeds and nuts, and their shortened faces provide increased bite force—an adaptation that suits their opportunistic feeding strategy.

Reproduction and Mating

Tana River Mangabeys live in polygynous groups of monkeys, where one dominant male typically has access to multiple females. Females display conspicuous monthly estrous swellings to signal fertility, and many also exhibit post-conception swellings. These false signals may confuse males and encourage multiple males to invest in infant care, increasing the infant’s survival chances.

Gestation for these monkeys lasts around 180 days, with births most common between August and April. A single infant is born, and the mother is initially left undisturbed by the group. After two months, infants begin to explore and socialise with others. Females likely reach sexual maturity around age three and begin breeding between six and seven, while males mature slightly later.

Geographic Range

Tana River Mangabeys are endemic to Kenya, confined to around 27 forest fragments along a narrow corridor of floodplain forest near the lower Tana River. This range spans from Nkanjonja in the north to Hewani in the south, across an altitudinal range of just 20–40 metres above sea level.

Historically, this species may have had a broader distribution. However, fragmentation due to deforestation, dam construction, and agriculture has severely restricted their movement and isolated populations. Forest corridors are no longer structurally connected, although some functional connectivity remains through limited travel between fragments.

Threats

Tana River Mangabeys live in the flood-plain forest, riverine gallery forest, and the adjacent woodland and bushland of Kenya (Wieczkowski and Butynski 2013). Their abundance is highly correlated with the spatial characteristics of the forests. They are semi-terrestrial monkeys that can travel up to 1 km through non-forested habitat between forest patches (Wieczkowski 2010).

The rapid decline of Tana River Mangabeys has several causes including: Forest clearance for agriculture.

IUCN red list

• Dam construction and water diversion: The building of hydroelectric dams has altered natural flood cycles and disrupted groundwater levels vital to the mangabeys’ habitat. The upcoming High Grand Falls Dam, one of Africa’s largest, threatens to irreparably damage the ecosystem.

• Deforestation and agriculture: Large swathes of gallery forest have been cleared for farming, drastically reducing the species’ habitat. An estimated 50% of the original forest has been lost in the last 20 years.

• Palm exploitation: Phoenix reclinata, a key food tree, is overharvested by local communities for palm wine, thatching, and mats, threatening both food security and habitat structure for the mangabeys.

• Logging and wildfires: Unregulated cutting of canopy and sub-canopy trees for housing and fuelwood, alongside uncontrolled fires, further degrades the forest and isolates populations.

• Human Persecution: As natural resources diminish, some mangabeys are are seen as pests and are persecuted and hunted for raiding crops—a threat expected to grow with increasing human-wildlife conflict.

• Political instability and poor law enforcement: The de-gazetting of the Tana River Primate Reserve in 2007 removed legal protections, exacerbating habitat destruction and reducing conservation oversight.

Take Action!

The Tana River Mangabey is on the brink. If their fragmented forests are lost, so too is this charismatic and intelligent monkey. Support indigenous-led conservation and agroecology efforts in East Africa. Demand the full reinstatement of protected habitat in Kenya. Boycott palm oil and refuse to support the industries driving deforestation and dam construction in critical floodplain ecosystems. #BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

FAQs

Why are Tana River Mangabeys endangered?

Their biggest threats are habitat loss and fragmentation, largely due to dam construction, logging, agriculture, and palm exploitation. Political instability and poor conservation enforcement have worsened their chances of survival (Butynski & Mwangi, 1994; Wieczkowski & Butynski, 2013).

What are the predators of the Tana River Mangabey?

Natural predators include African rock pythons (Python sebae), crowned eagles (Stephanoaetus coronatus), martial eagles (Polemaetus bellicosus), and Nile crocodiles (Crocodylus niloticus) (Wikipedia, n.d.).

In which country are Tana River Mangabeys found?

They are found exclusively in Kenya.

What do Tana River Mangabeys eat?

Their diet includes fruits, seeds, leaves, insects, stems, and fungi. They rely heavily on species like Ficus sycomorus and Phoenix reclinata (Homewood, 1978; Maingi, 2019).

Do Tana River Mangabeys make good pets?

Tana River Mangabeys are highly social and intelligent primates. Keeping them as pets is cruel and contributes to their extinction. Trapping them destroys wild populations, causes immense suffering, and breaks apart family groups. If you care about these animals, never support the exotic pet trade—advocate for habitat protection instead.

Support the conservation of this species

This animal has no protections in place. Read about other forgotten species here. Create art to support this forgotten animal or raise awareness about them by sharing this post and using the #Boycottpalmoil #Boycott4Wildlife hashtags on social media. Also you can boycott palm oil in the supermarket.

Further Information

Butynski, T.M., de Jong, Y.A., Wieczkowski, J. & King, J. 2020. Cercocebus galeritus. The IUCN Red List of Threatened Species 2020: e.T4200A17956330. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T4200A17956330.en. Downloaded on 26 March 2021.

Homewood, K. M. (1978). Feeding strategy of the Tana mangabey (Cercocebus galeritus galeritus) (Mammalia: Primates). Journal of Zoology, 186(3), 375–391. https://doi.org/10.1111/j.1469-7998.1978.tb03926.x

Kimuyu, D. M., Wahungu, G. M., & Otieno, D. O. (2012). Seed dispersal by Tana River mangabeys in fragmented gallery forests. Open Journal of Ecology, 2(1), 6–11. https://doi.org/10.4236/oje.2012.21002

Maingi, C. K. (2019). Forest fragmentation and anthropogenic disturbance: Implications on plant foods and behaviour of the Tana River mangabey. University of Nairobi. http://erepository.uonbi.ac.ke/handle/11295/107320

Maingi, C. K., Githaiga, J. M., Kanya, J. I., & Kivai, S. M. (2020). Anthropogenic activities and influence on behaviour of the Tana River mangabey (Cercocebus galeritus) in two forest fragments in Lower Tana River, Kenya. African Primates, 14(1), 1–16. Retrieved from https://static1.1.sqspcdn.com/static/f/1200343/28385233/1608487219480/AP+Vol+14+-+Maingi+et+al.pdf

Wieczkowski, J. (2010). Tana River mangabey use of nonforest areas: Functional connectivity in a fragmented landscape in Kenya. Biotropica, 42(5), 598–604. https://doi.org/10.1111/j.1744-7429.2010.00627.x

Wikipedia. (n.d.). Tana River Mangabey. https://en.wikipedia.org/wiki/Tana_River_mangabey

Tana River Mangabey Cercocebus galeritus

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

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The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

#Africa #Agriculture #Boycott4wildlife #BoycottMeat #BoycottPalmOil #CriticallyEndangeredSpecies #dams #deforestation #endangered #fire #fires #forests #ForgottenAnimals #humanWildlifeConflict #hunting #hydroelectric #Kenya #Kenyan #Mammal #Mangabey #mangroves #monkey #monkeys #PalmOil #Primate #primates #SeedDispersers #TanaRiverMangabeyCercocebusGaleritus #vegan #wildfires

White-thighed Colobus Colobus vellerosus

White-thighed Colobus Colobus vellerosus

IUCN Red List Status: Critically Endangered

Location: Ghana, Côte d’Ivoire, Benin, Togo, Nigeria, Burkina Faso

The White-thighed Colobus is found in the forests of West Africa, including lowland rainforest, semi-deciduous forest, gallery forest, and swamp forest. Key strongholds include the Boabeng-Fiema Monkey Sanctuary in Ghana and Kikélé Sacred Forest in Benin.

The White-thighed Colobus (Colobus vellerosus), also known as the Ursine Colobus or Geoffroy’s Black-and-White Colobus, is a striking primate of West Africa and is currently listed as Critically Endangered on the IUCN Red List. Their numbers have plummeted by over 80% in just three generations due to rampant deforestation driven by logging, agriculture, and expanding palm oil plantations. Intense bushmeat hunting and weakening traditional taboos have further accelerated their decline. With fewer than 1,500 individuals thought to remain in the wild, urgent action is needed to save them. Use your wallet as a weapon—boycott products that contain palm oil and support ethical, indigenous-led conservation. BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

https://youtu.be/ZtNODz25LzU?si=toKWDq3KJWzMmwSC

The White-thighed #Colobus of #Ghana are critically endangered #monkeys 🐒🙈🧐🙊 Big brands are destroying their home for #palmoil, edging them towards #extinction. Take action! #Boycottpalmoil 🌴🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

With complex vocalisations and striking halos of white hair, the White-thighed #Colobus 🐵🐒🩷 are arguably rarest #primates in #WestAfrica 🇨🇮 🇬🇭 Help them to survive when you #BoycottPalmOil 🌴🪔🔥🧐⛔️ #Boycott4Wildlife in the supermarket! @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

Appearance and Behaviour

The White-thighed Colobus is instantly recognisable by its black fur offset with bright white patches on the thighs and a halo of thick white fur surrounding their bare black face. Their long, fully white tail and slender body give them a unique silhouette among colobines. Infants are born completely white and darken to adult colouration by around three months.

In both Côte d’Ivoire and Ghana, more than half of the closed forest in the forest reserves has been converted to plantation or farmland, or cleared and left bare (Bitty et al. 2015).

IUCN Red List

These monkeys are highly arboreal, agile, and diurnal, moving through the canopy with grace. Their complex vocal repertoire includes deep roaring calls to defend territories and sharp snorts as alarm signals. Group structure typically includes one territorial male with multiple females and their offspring, though multi-male groups are also observed.

Diet

Primarily folivorous, the White-thighed Colobus feeds on young leaves, seeds, fruits, buds, flowers, and bark. Their diet includes more than 30 plant species and varies with seasonal availability. In Kikélé Sacred Forest, they consume large amounts of leaves (over 60%), followed by fruits and other plant parts. They occasionally supplement their diet with termite clay.

Reproduction and Mating

Groups of these colobuses typically include one or more adult males, several females, and their offspring. Group sizes range from 10 to 25 individuals. Breeding occurs year-round, with a likely peak during the dry season. Infants are closely cared for by mothers and other females, fostering a strong social structure. Males often disperse upon reaching sexual maturity.

Geographic Range

The species is found in Ghana, Côte d’Ivoire, Benin, Nigeria, Togo, and possibly the southernmost tip of Burkina Faso. It has been extirpated from many forest reserves in Ghana and Côte d’Ivoire due to extreme hunting and forest clearance. Populations remain in Boabeng-Fiema Monkey Sanctuary (Ghana), Comoé National Park (Côte d’Ivoire), Fazao-Malfakassa National Park (Togo), and Kikélé Sacred Forest (Benin). It is likely extinct in Burkina Faso.

Threats

The White-thighed Colobus is threatened primarily by hunting and secondarily by habitat loss (McGraw 2005). Accelerated hunting pressure is discernible from reported changes in hunters’ behaviour in the species’ range countries. Thirty years ago, hunters in Ghana and Côte d’Ivoire almost always hunted only larger-bodied animals, but now they are mostly hunting smaller-bodied animals because of the depletion of large primates like C. vellerosus (Decher and Kpelle 2005, Gonedelé Bi et al. 2016).

In Comoé National Park in Côte d’Ivoire, several groups remain, but hunting pressure and mining occur although some patrol is in place.

• Deforestation from logging, agriculture, road building, and palm oil plantations has fragmented and destroyed their habitat.
• Palm oil, tobacco and cocoa expansion and industrial production is a major driver of forest clearance across West Africa, particularly in Ghana and Côte d’Ivoire.
• Hunting for bushmeat is rampant, including in protected areas and sacred groves.
• Collapse of traditional taboos that once protected the species has made them vulnerable to killing by local communities.
• Hydropower development, such as the proposed Adjarala dam on the Mono River, threatens forests in Benin and Togo.
• Infrastructure expansion and human settlement continue to encroach on remaining habitats.

Take Action!

Use your wallet as a weapon. Boycott products that contain palm oil—this is one of the leading causes of deforestation that is destroying the forests of the White-thighed Colobus. Avoid meat and dairy, which drive land clearing for grazing and feed crops. Support indigenous-led conservation and community-based sanctuaries like Boabeng-Fiema. Demand governments halt infrastructure projects in critical habitat areas. Take action every time you shop BoycottPalmOil #Boycott4Wildlife be #Vegan and #BoycottMeat

FAQs

How many White-thighed Colobus are left in the wild?

Recent estimates suggest fewer than 1,500 individuals remain across their entire range (IUCN, 2020). In some places, only a few isolated groups survive, such as in Kikélé Sacred Forest (Benin) and Boabeng-Fiema Monkey Sanctuary (Ghana).

What is the average lifespan of the White-thighed Colobus in the wild?

While specific data are scarce, similar species of colobus monkeys live up to 20 years in the wild. In captivity, they may live slightly longer under optimal care.

How are White-thighed Colobuses affected by palm oil?

Palm oil plantations are expanding rapidly in West Africa, replacing biodiverse forests with monocultures. This directly destroys the colobus monkeys’ food sources, sleeping trees, and corridors between forest patches. Products with palm oil continue to drive this destruction.

What are the biggest threats to the White-thighed Colobus?

Besides palm oil, the main threats include logging, conversion of forest to farmland, hunting for bushmeat, infrastructure development (roads and dams), and the erosion of traditional beliefs that once protected them.

Are White-thighed Colobuses sacred to local communities?

Yes, in areas like Boabeng-Fiema and Kikélé, they are considered sacred and are given burial rites. However, these traditions are fading, and poaching still occurs.

White-thighed Colobus Colobus vellerosus

Support the conservation of this species

Colobus Conservation

Further Information

Arseneau-Robar, T. J., Teichroeb, J. A., Macintosh, A. J. J., Saj, T. L., Glotfelty, E., Lucci, S., Sicotte, P., & Wikberg, E. C. (2024). When population growth intensifies intergroup competition, female colobus monkeys free-ride less. Scientific Reports, 14, Article 14363. https://doi.org/10.1038/s41598-024-64188-0

Djègo-Djossou, S., Koné, I., Fandohan, A. B., Djègo, J. G., Huynen, M. C., & Sinsin, B. (2015). Habitat Use by White-Thighed Colobus in the Kikélé Sacred Forest: Activity Budget, Feeding Ecology and Selection of Sleeping Trees. Primate Conservation, 2015(29), 97–105. https://doi.org/10.1896/052.029.0106

Kankam, B. O., Antwi-Bosiako, P., Addae-Wireko, L., & Dankwah, C. (2023). Growing population of the critically endangered white-thighed colobus monkey (Colobus vellerosus) from forest fragments in Ghana. Journal of Tropical Ecology, 39, e33. doi:10.1017/S0266467423000214

Matsuda Goodwin, R., Gonedelé Bi, S., Nobimè, G., Koné, I., Osei, D., Segniagbeto, G. & Oates, J.F. 2020. Colobus vellerosus. The IUCN Red List of Threatened Species 2020: e.T5146A169472127. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5146A169472127.en. Downloaded on 15 February 2021.

Mohamed bin Zayed Species Conservation Fund. (2021). White-thighed Colobus – Project No. 202525581. https://www.speciesconservation.org/case-studies-projects/white-thighed-colobus/25581

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

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2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Read more

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Read more

Anthropologist and Author Dr Sophie Chao

Read more

Health Physician Dr Evan Allen

Read more

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

#Benin #Boycott4wildlife #BoycottMeat #BoycottPalmOil #BurkinaFaso #Colobus #CoteDIvoire #CriticallyEndangeredSpecies #dams #deforestation #extinction #ForgottenAnimals #Ghana #hunting #hydroelectric #IvoryCoast #Mammal #meatDeforestation_ #mining #monkey #monkeys #Nigeria #PalmOil #palmOilDeforestation #palmoil #poachers #poaching #Primate #primates #primatology #tobacco #Togo #vegan #WestAfrica #WhiteThighedColobusColobusVellerosus

White-thighed Colobus Colobus vellerosus

White-thighed Colobus Colobus vellerosus

IUCN Red List Status: Critically Endangered

Location: Ghana, Côte d’Ivoire, Benin, Togo, Nigeria, Burkina Faso

The White-thighed Colobus is found in the forests of West Africa, including lowland rainforest, semi-deciduous forest, gallery forest, and swamp forest. Key strongholds include the Boabeng-Fiema Monkey Sanctuary in Ghana and Kikélé Sacred Forest in Benin.

The White-thighed Colobus (Colobus vellerosus), also known as the Ursine Colobus or Geoffroy’s Black-and-White Colobus, is a striking primate of West Africa and is currently listed as Critically Endangered on the IUCN Red List. Their numbers have plummeted by over 80% in just three generations due to rampant deforestation driven by logging, agriculture, and expanding palm oil plantations. Intense bushmeat hunting and weakening traditional taboos have further accelerated their decline. With fewer than 1,500 individuals thought to remain in the wild, urgent action is needed to save them. Use your wallet as a weapon—boycott products that contain palm oil and support ethical, indigenous-led conservation. BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

https://youtu.be/ZtNODz25LzU?si=toKWDq3KJWzMmwSC

The White-thighed #Colobus of #Ghana are critically endangered #monkeys 🐒🙈🧐🙊 Big brands are destroying their home for #palmoil, edging them towards #extinction. Take action! #Boycottpalmoil 🌴🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

With complex vocalisations and striking halos of white hair, the White-thighed #Colobus 🐵🐒🩷 are arguably rarest #primates in #WestAfrica 🇨🇮 🇬🇭 Help them to survive when you #BoycottPalmOil 🌴🪔🔥🧐⛔️ #Boycott4Wildlife in the supermarket! @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

Appearance and Behaviour

The White-thighed Colobus is instantly recognisable by its black fur offset with bright white patches on the thighs and a halo of thick white fur surrounding their bare black face. Their long, fully white tail and slender body give them a unique silhouette among colobines. Infants are born completely white and darken to adult colouration by around three months.

In both Côte d’Ivoire and Ghana, more than half of the closed forest in the forest reserves has been converted to plantation or farmland, or cleared and left bare (Bitty et al. 2015).

IUCN Red List

These monkeys are highly arboreal, agile, and diurnal, moving through the canopy with grace. Their complex vocal repertoire includes deep roaring calls to defend territories and sharp snorts as alarm signals. Group structure typically includes one territorial male with multiple females and their offspring, though multi-male groups are also observed.

Diet

Primarily folivorous, the White-thighed Colobus feeds on young leaves, seeds, fruits, buds, flowers, and bark. Their diet includes more than 30 plant species and varies with seasonal availability. In Kikélé Sacred Forest, they consume large amounts of leaves (over 60%), followed by fruits and other plant parts. They occasionally supplement their diet with termite clay.

Reproduction and Mating

Groups of these colobuses typically include one or more adult males, several females, and their offspring. Group sizes range from 10 to 25 individuals. Breeding occurs year-round, with a likely peak during the dry season. Infants are closely cared for by mothers and other females, fostering a strong social structure. Males often disperse upon reaching sexual maturity.

Geographic Range

The species is found in Ghana, Côte d’Ivoire, Benin, Nigeria, Togo, and possibly the southernmost tip of Burkina Faso. It has been extirpated from many forest reserves in Ghana and Côte d’Ivoire due to extreme hunting and forest clearance. Populations remain in Boabeng-Fiema Monkey Sanctuary (Ghana), Comoé National Park (Côte d’Ivoire), Fazao-Malfakassa National Park (Togo), and Kikélé Sacred Forest (Benin). It is likely extinct in Burkina Faso.

Threats

The White-thighed Colobus is threatened primarily by hunting and secondarily by habitat loss (McGraw 2005). Accelerated hunting pressure is discernible from reported changes in hunters’ behaviour in the species’ range countries. Thirty years ago, hunters in Ghana and Côte d’Ivoire almost always hunted only larger-bodied animals, but now they are mostly hunting smaller-bodied animals because of the depletion of large primates like C. vellerosus (Decher and Kpelle 2005, Gonedelé Bi et al. 2016).

In Comoé National Park in Côte d’Ivoire, several groups remain, but hunting pressure and mining occur although some patrol is in place.

• Deforestation from logging, agriculture, road building, and palm oil plantations has fragmented and destroyed their habitat.
• Palm oil, tobacco and cocoa expansion and industrial production is a major driver of forest clearance across West Africa, particularly in Ghana and Côte d’Ivoire.
• Hunting for bushmeat is rampant, including in protected areas and sacred groves.
• Collapse of traditional taboos that once protected the species has made them vulnerable to killing by local communities.
• Hydropower development, such as the proposed Adjarala dam on the Mono River, threatens forests in Benin and Togo.
• Infrastructure expansion and human settlement continue to encroach on remaining habitats.

Take Action!

Use your wallet as a weapon. Boycott products that contain palm oil—this is one of the leading causes of deforestation that is destroying the forests of the White-thighed Colobus. Avoid meat and dairy, which drive land clearing for grazing and feed crops. Support indigenous-led conservation and community-based sanctuaries like Boabeng-Fiema. Demand governments halt infrastructure projects in critical habitat areas. Take action every time you shop BoycottPalmOil #Boycott4Wildlife be #Vegan and #BoycottMeat

FAQs

How many White-thighed Colobus are left in the wild?

Recent estimates suggest fewer than 1,500 individuals remain across their entire range (IUCN, 2020). In some places, only a few isolated groups survive, such as in Kikélé Sacred Forest (Benin) and Boabeng-Fiema Monkey Sanctuary (Ghana).

What is the average lifespan of the White-thighed Colobus in the wild?

While specific data are scarce, similar species of colobus monkeys live up to 20 years in the wild. In captivity, they may live slightly longer under optimal care.

How are White-thighed Colobuses affected by palm oil?

Palm oil plantations are expanding rapidly in West Africa, replacing biodiverse forests with monocultures. This directly destroys the colobus monkeys’ food sources, sleeping trees, and corridors between forest patches. Products with palm oil continue to drive this destruction.

What are the biggest threats to the White-thighed Colobus?

Besides palm oil, the main threats include logging, conversion of forest to farmland, hunting for bushmeat, infrastructure development (roads and dams), and the erosion of traditional beliefs that once protected them.

Are White-thighed Colobuses sacred to local communities?

Yes, in areas like Boabeng-Fiema and Kikélé, they are considered sacred and are given burial rites. However, these traditions are fading, and poaching still occurs.

White-thighed Colobus Colobus vellerosus

Support the conservation of this species

Colobus Conservation

Further Information

Arseneau-Robar, T. J., Teichroeb, J. A., Macintosh, A. J. J., Saj, T. L., Glotfelty, E., Lucci, S., Sicotte, P., & Wikberg, E. C. (2024). When population growth intensifies intergroup competition, female colobus monkeys free-ride less. Scientific Reports, 14, Article 14363. https://doi.org/10.1038/s41598-024-64188-0

Djègo-Djossou, S., Koné, I., Fandohan, A. B., Djègo, J. G., Huynen, M. C., & Sinsin, B. (2015). Habitat Use by White-Thighed Colobus in the Kikélé Sacred Forest: Activity Budget, Feeding Ecology and Selection of Sleeping Trees. Primate Conservation, 2015(29), 97–105. https://doi.org/10.1896/052.029.0106

Kankam, B. O., Antwi-Bosiako, P., Addae-Wireko, L., & Dankwah, C. (2023). Growing population of the critically endangered white-thighed colobus monkey (Colobus vellerosus) from forest fragments in Ghana. Journal of Tropical Ecology, 39, e33. doi:10.1017/S0266467423000214

Matsuda Goodwin, R., Gonedelé Bi, S., Nobimè, G., Koné, I., Osei, D., Segniagbeto, G. & Oates, J.F. 2020. Colobus vellerosus. The IUCN Red List of Threatened Species 2020: e.T5146A169472127. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5146A169472127.en. Downloaded on 15 February 2021.

Mohamed bin Zayed Species Conservation Fund. (2021). White-thighed Colobus – Project No. 202525581. https://www.speciesconservation.org/case-studies-projects/white-thighed-colobus/25581

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

• Twitter
• Facebook
• Instagram
• WordPress
• YouTube
• Mail
• Mastodon

Enter your email address

Sign Up

2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Read more

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Read more

Anthropologist and Author Dr Sophie Chao

Read more

Health Physician Dr Evan Allen

Read more

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

#Benin #Boycott4wildlife #BoycottMeat #BoycottPalmOil #BurkinaFaso #Colobus #CoteDIvoire #CriticallyEndangeredSpecies #dams #deforestation #extinction #ForgottenAnimals #Ghana #hunting #hydroelectric #IvoryCoast #Mammal #meatDeforestation_ #mining #monkey #monkeys #Nigeria #PalmOil #palmOilDeforestation #palmoil #poachers #poaching #Primate #primates #primatology #tobacco #Togo #vegan #WestAfrica #WhiteThighedColobusColobusVellerosus

White-thighed Colobus Colobus vellerosus

White-thighed Colobus Colobus vellerosus

IUCN Red List Status: Critically Endangered

Location: Ghana, Côte d’Ivoire, Benin, Togo, Nigeria, Burkina Faso

The White-thighed Colobus is found in the forests of West Africa, including lowland rainforest, semi-deciduous forest, gallery forest, and swamp forest. Key strongholds include the Boabeng-Fiema Monkey Sanctuary in Ghana and Kikélé Sacred Forest in Benin.

The White-thighed Colobus (Colobus vellerosus), also known as the Ursine Colobus or Geoffroy’s Black-and-White Colobus, is a striking primate of West Africa and is currently listed as Critically Endangered on the IUCN Red List. Their numbers have plummeted by over 80% in just three generations due to rampant deforestation driven by logging, agriculture, and expanding palm oil plantations. Intense bushmeat hunting and weakening traditional taboos have further accelerated their decline. With fewer than 1,500 individuals thought to remain in the wild, urgent action is needed to save them. Use your wallet as a weapon—boycott products that contain palm oil and support ethical, indigenous-led conservation. BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

https://youtu.be/ZtNODz25LzU?si=toKWDq3KJWzMmwSC

The White-thighed #Colobus of #Ghana are critically endangered #monkeys 🐒🙈🧐🙊 Big brands are destroying their home for #palmoil, edging them towards #extinction. Take action! #Boycottpalmoil 🌴🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

With complex vocalisations and striking halos of white hair, the White-thighed #Colobus 🐵🐒🩷 are arguably rarest #primates in #WestAfrica 🇨🇮 🇬🇭 Help them to survive when you #BoycottPalmOil 🌴🪔🔥🧐⛔️ #Boycott4Wildlife in the supermarket! @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

Appearance and Behaviour

The White-thighed Colobus is instantly recognisable by its black fur offset with bright white patches on the thighs and a halo of thick white fur surrounding their bare black face. Their long, fully white tail and slender body give them a unique silhouette among colobines. Infants are born completely white and darken to adult colouration by around three months.

In both Côte d’Ivoire and Ghana, more than half of the closed forest in the forest reserves has been converted to plantation or farmland, or cleared and left bare (Bitty et al. 2015).

IUCN Red List

These monkeys are highly arboreal, agile, and diurnal, moving through the canopy with grace. Their complex vocal repertoire includes deep roaring calls to defend territories and sharp snorts as alarm signals. Group structure typically includes one territorial male with multiple females and their offspring, though multi-male groups are also observed.

Diet

Primarily folivorous, the White-thighed Colobus feeds on young leaves, seeds, fruits, buds, flowers, and bark. Their diet includes more than 30 plant species and varies with seasonal availability. In Kikélé Sacred Forest, they consume large amounts of leaves (over 60%), followed by fruits and other plant parts. They occasionally supplement their diet with termite clay.

Reproduction and Mating

Groups of these colobuses typically include one or more adult males, several females, and their offspring. Group sizes range from 10 to 25 individuals. Breeding occurs year-round, with a likely peak during the dry season. Infants are closely cared for by mothers and other females, fostering a strong social structure. Males often disperse upon reaching sexual maturity.

Geographic Range

The species is found in Ghana, Côte d’Ivoire, Benin, Nigeria, Togo, and possibly the southernmost tip of Burkina Faso. It has been extirpated from many forest reserves in Ghana and Côte d’Ivoire due to extreme hunting and forest clearance. Populations remain in Boabeng-Fiema Monkey Sanctuary (Ghana), Comoé National Park (Côte d’Ivoire), Fazao-Malfakassa National Park (Togo), and Kikélé Sacred Forest (Benin). It is likely extinct in Burkina Faso.

Threats

The White-thighed Colobus is threatened primarily by hunting and secondarily by habitat loss (McGraw 2005). Accelerated hunting pressure is discernible from reported changes in hunters’ behaviour in the species’ range countries. Thirty years ago, hunters in Ghana and Côte d’Ivoire almost always hunted only larger-bodied animals, but now they are mostly hunting smaller-bodied animals because of the depletion of large primates like C. vellerosus (Decher and Kpelle 2005, Gonedelé Bi et al. 2016).

In Comoé National Park in Côte d’Ivoire, several groups remain, but hunting pressure and mining occur although some patrol is in place.

• Deforestation from logging, agriculture, road building, and palm oil plantations has fragmented and destroyed their habitat.
• Palm oil, tobacco and cocoa expansion and industrial production is a major driver of forest clearance across West Africa, particularly in Ghana and Côte d’Ivoire.
• Hunting for bushmeat is rampant, including in protected areas and sacred groves.
• Collapse of traditional taboos that once protected the species has made them vulnerable to killing by local communities.
• Hydropower development, such as the proposed Adjarala dam on the Mono River, threatens forests in Benin and Togo.
• Infrastructure expansion and human settlement continue to encroach on remaining habitats.

Take Action!

Use your wallet as a weapon. Boycott products that contain palm oil—this is one of the leading causes of deforestation that is destroying the forests of the White-thighed Colobus. Avoid meat and dairy, which drive land clearing for grazing and feed crops. Support indigenous-led conservation and community-based sanctuaries like Boabeng-Fiema. Demand governments halt infrastructure projects in critical habitat areas. Take action every time you shop BoycottPalmOil #Boycott4Wildlife be #Vegan and #BoycottMeat

FAQs

How many White-thighed Colobus are left in the wild?

Recent estimates suggest fewer than 1,500 individuals remain across their entire range (IUCN, 2020). In some places, only a few isolated groups survive, such as in Kikélé Sacred Forest (Benin) and Boabeng-Fiema Monkey Sanctuary (Ghana).

What is the average lifespan of the White-thighed Colobus in the wild?

While specific data are scarce, similar species of colobus monkeys live up to 20 years in the wild. In captivity, they may live slightly longer under optimal care.

How are White-thighed Colobuses affected by palm oil?

Palm oil plantations are expanding rapidly in West Africa, replacing biodiverse forests with monocultures. This directly destroys the colobus monkeys’ food sources, sleeping trees, and corridors between forest patches. Products with palm oil continue to drive this destruction.

What are the biggest threats to the White-thighed Colobus?

Besides palm oil, the main threats include logging, conversion of forest to farmland, hunting for bushmeat, infrastructure development (roads and dams), and the erosion of traditional beliefs that once protected them.

Are White-thighed Colobuses sacred to local communities?

Yes, in areas like Boabeng-Fiema and Kikélé, they are considered sacred and are given burial rites. However, these traditions are fading, and poaching still occurs.

White-thighed Colobus Colobus vellerosus

Support the conservation of this species

Colobus Conservation

Further Information

Arseneau-Robar, T. J., Teichroeb, J. A., Macintosh, A. J. J., Saj, T. L., Glotfelty, E., Lucci, S., Sicotte, P., & Wikberg, E. C. (2024). When population growth intensifies intergroup competition, female colobus monkeys free-ride less. Scientific Reports, 14, Article 14363. https://doi.org/10.1038/s41598-024-64188-0

Djègo-Djossou, S., Koné, I., Fandohan, A. B., Djègo, J. G., Huynen, M. C., & Sinsin, B. (2015). Habitat Use by White-Thighed Colobus in the Kikélé Sacred Forest: Activity Budget, Feeding Ecology and Selection of Sleeping Trees. Primate Conservation, 2015(29), 97–105. https://doi.org/10.1896/052.029.0106

Kankam, B. O., Antwi-Bosiako, P., Addae-Wireko, L., & Dankwah, C. (2023). Growing population of the critically endangered white-thighed colobus monkey (Colobus vellerosus) from forest fragments in Ghana. Journal of Tropical Ecology, 39, e33. doi:10.1017/S0266467423000214

Matsuda Goodwin, R., Gonedelé Bi, S., Nobimè, G., Koné, I., Osei, D., Segniagbeto, G. & Oates, J.F. 2020. Colobus vellerosus. The IUCN Red List of Threatened Species 2020: e.T5146A169472127. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5146A169472127.en. Downloaded on 15 February 2021.

Mohamed bin Zayed Species Conservation Fund. (2021). White-thighed Colobus – Project No. 202525581. https://www.speciesconservation.org/case-studies-projects/white-thighed-colobus/25581

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

• Twitter
• Facebook
• Instagram
• WordPress
• YouTube
• Mail
• Mastodon

Enter your email address

Sign Up

2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.

Wildlife Artist Juanchi Pérez

Read more

Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Read more

Anthropologist and Author Dr Sophie Chao

Read more

Health Physician Dr Evan Allen

Read more

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

#Benin #Boycott4wildlife #BoycottMeat #BoycottPalmOil #BurkinaFaso #Colobus #CoteDIvoire #CriticallyEndangeredSpecies #dams #deforestation #extinction #ForgottenAnimals #Ghana #hunting #hydroelectric #IvoryCoast #Mammal #meatDeforestation_ #mining #monkey #monkeys #Nigeria #PalmOil #palmOilDeforestation #palmoil #poachers #poaching #Primate #primates #primatology #tobacco #Togo #vegan #WestAfrica #WhiteThighedColobusColobusVellerosus

White-thighed Colobus Colobus vellerosus

White-thighed Colobus Colobus vellerosus

IUCN Red List Status: Critically Endangered

Location: Ghana, Côte d’Ivoire, Benin, Togo, Nigeria, Burkina Faso

The White-thighed Colobus is found in the forests of West Africa, including lowland rainforest, semi-deciduous forest, gallery forest, and swamp forest. Key strongholds include the Boabeng-Fiema Monkey Sanctuary in Ghana and Kikélé Sacred Forest in Benin.

The White-thighed Colobus (Colobus vellerosus), also known as the Ursine Colobus or Geoffroy’s Black-and-White Colobus, is a striking primate of West Africa and is currently listed as Critically Endangered on the IUCN Red List. Their numbers have plummeted by over 80% in just three generations due to rampant deforestation driven by logging, agriculture, and expanding palm oil plantations. Intense bushmeat hunting and weakening traditional taboos have further accelerated their decline. With fewer than 1,500 individuals thought to remain in the wild, urgent action is needed to save them. Use your wallet as a weapon—boycott products that contain palm oil and support ethical, indigenous-led conservation. BoycottPalmOil #Boycott4Wildlife #Vegan #BoycottMeat

https://youtu.be/ZtNODz25LzU?si=toKWDq3KJWzMmwSC

The White-thighed #Colobus of #Ghana are critically endangered #monkeys 🐒🙈🧐🙊 Big brands are destroying their home for #palmoil, edging them towards #extinction. Take action! #Boycottpalmoil 🌴🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

With complex vocalisations and striking halos of white hair, the White-thighed #Colobus 🐵🐒🩷 are arguably rarest #primates in #WestAfrica 🇨🇮 🇬🇭 Help them to survive when you #BoycottPalmOil 🌴🪔🔥🧐⛔️ #Boycott4Wildlife in the supermarket! @palmoildetect https://palmoildetectives.com/2021/02/15/white-thighed-colobus-colobus-vellerosus/

Appearance and Behaviour

The White-thighed Colobus is instantly recognisable by its black fur offset with bright white patches on the thighs and a halo of thick white fur surrounding their bare black face. Their long, fully white tail and slender body give them a unique silhouette among colobines. Infants are born completely white and darken to adult colouration by around three months.

In both Côte d’Ivoire and Ghana, more than half of the closed forest in the forest reserves has been converted to plantation or farmland, or cleared and left bare (Bitty et al. 2015).

IUCN Red List

These monkeys are highly arboreal, agile, and diurnal, moving through the canopy with grace. Their complex vocal repertoire includes deep roaring calls to defend territories and sharp snorts as alarm signals. Group structure typically includes one territorial male with multiple females and their offspring, though multi-male groups are also observed.

Diet

Primarily folivorous, the White-thighed Colobus feeds on young leaves, seeds, fruits, buds, flowers, and bark. Their diet includes more than 30 plant species and varies with seasonal availability. In Kikélé Sacred Forest, they consume large amounts of leaves (over 60%), followed by fruits and other plant parts. They occasionally supplement their diet with termite clay.

Reproduction and Mating

Groups of these colobuses typically include one or more adult males, several females, and their offspring. Group sizes range from 10 to 25 individuals. Breeding occurs year-round, with a likely peak during the dry season. Infants are closely cared for by mothers and other females, fostering a strong social structure. Males often disperse upon reaching sexual maturity.

Geographic Range

The species is found in Ghana, Côte d’Ivoire, Benin, Nigeria, Togo, and possibly the southernmost tip of Burkina Faso. It has been extirpated from many forest reserves in Ghana and Côte d’Ivoire due to extreme hunting and forest clearance. Populations remain in Boabeng-Fiema Monkey Sanctuary (Ghana), Comoé National Park (Côte d’Ivoire), Fazao-Malfakassa National Park (Togo), and Kikélé Sacred Forest (Benin). It is likely extinct in Burkina Faso.

Threats

The White-thighed Colobus is threatened primarily by hunting and secondarily by habitat loss (McGraw 2005). Accelerated hunting pressure is discernible from reported changes in hunters’ behaviour in the species’ range countries. Thirty years ago, hunters in Ghana and Côte d’Ivoire almost always hunted only larger-bodied animals, but now they are mostly hunting smaller-bodied animals because of the depletion of large primates like C. vellerosus (Decher and Kpelle 2005, Gonedelé Bi et al. 2016).

In Comoé National Park in Côte d’Ivoire, several groups remain, but hunting pressure and mining occur although some patrol is in place.

• Deforestation from logging, agriculture, road building, and palm oil plantations has fragmented and destroyed their habitat.
• Palm oil, tobacco and cocoa expansion and industrial production is a major driver of forest clearance across West Africa, particularly in Ghana and Côte d’Ivoire.
• Hunting for bushmeat is rampant, including in protected areas and sacred groves.
• Collapse of traditional taboos that once protected the species has made them vulnerable to killing by local communities.
• Hydropower development, such as the proposed Adjarala dam on the Mono River, threatens forests in Benin and Togo.
• Infrastructure expansion and human settlement continue to encroach on remaining habitats.

Take Action!

Use your wallet as a weapon. Boycott products that contain palm oil—this is one of the leading causes of deforestation that is destroying the forests of the White-thighed Colobus. Avoid meat and dairy, which drive land clearing for grazing and feed crops. Support indigenous-led conservation and community-based sanctuaries like Boabeng-Fiema. Demand governments halt infrastructure projects in critical habitat areas. Take action every time you shop BoycottPalmOil #Boycott4Wildlife be #Vegan and #BoycottMeat

FAQs

How many White-thighed Colobus are left in the wild?

Recent estimates suggest fewer than 1,500 individuals remain across their entire range (IUCN, 2020). In some places, only a few isolated groups survive, such as in Kikélé Sacred Forest (Benin) and Boabeng-Fiema Monkey Sanctuary (Ghana).

What is the average lifespan of the White-thighed Colobus in the wild?

While specific data are scarce, similar species of colobus monkeys live up to 20 years in the wild. In captivity, they may live slightly longer under optimal care.

How are White-thighed Colobuses affected by palm oil?

Palm oil plantations are expanding rapidly in West Africa, replacing biodiverse forests with monocultures. This directly destroys the colobus monkeys’ food sources, sleeping trees, and corridors between forest patches. Products with palm oil continue to drive this destruction.

What are the biggest threats to the White-thighed Colobus?

Besides palm oil, the main threats include logging, conversion of forest to farmland, hunting for bushmeat, infrastructure development (roads and dams), and the erosion of traditional beliefs that once protected them.

Are White-thighed Colobuses sacred to local communities?

Yes, in areas like Boabeng-Fiema and Kikélé, they are considered sacred and are given burial rites. However, these traditions are fading, and poaching still occurs.

White-thighed Colobus Colobus vellerosus

Support the conservation of this species

Colobus Conservation

Further Information

Arseneau-Robar, T. J., Teichroeb, J. A., Macintosh, A. J. J., Saj, T. L., Glotfelty, E., Lucci, S., Sicotte, P., & Wikberg, E. C. (2024). When population growth intensifies intergroup competition, female colobus monkeys free-ride less. Scientific Reports, 14, Article 14363. https://doi.org/10.1038/s41598-024-64188-0

Djègo-Djossou, S., Koné, I., Fandohan, A. B., Djègo, J. G., Huynen, M. C., & Sinsin, B. (2015). Habitat Use by White-Thighed Colobus in the Kikélé Sacred Forest: Activity Budget, Feeding Ecology and Selection of Sleeping Trees. Primate Conservation, 2015(29), 97–105. https://doi.org/10.1896/052.029.0106

Kankam, B. O., Antwi-Bosiako, P., Addae-Wireko, L., & Dankwah, C. (2023). Growing population of the critically endangered white-thighed colobus monkey (Colobus vellerosus) from forest fragments in Ghana. Journal of Tropical Ecology, 39, e33. doi:10.1017/S0266467423000214

Matsuda Goodwin, R., Gonedelé Bi, S., Nobimè, G., Koné, I., Osei, D., Segniagbeto, G. & Oates, J.F. 2020. Colobus vellerosus. The IUCN Red List of Threatened Species 2020: e.T5146A169472127. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T5146A169472127.en. Downloaded on 15 February 2021.

Mohamed bin Zayed Species Conservation Fund. (2021). White-thighed Colobus – Project No. 202525581. https://www.speciesconservation.org/case-studies-projects/white-thighed-colobus/25581

How can I help the #Boycott4Wildlife?

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The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

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How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

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Storm’s Stork Ciconia stormi

Storm’s Stork Ciconia stormi

IUCN Red List Status: Endangered

Location: Malaysia, Indonesia, Thailand, Brunei

Found in lowland riverine and peat swamp forests of #Borneo, #Sumatra, Peninsular #Malaysia, and southern #Thailand. Core strongholds include the floodplains of Sabah and peat swamps of #Kalimantan.

Storm’s Stork Ciconia stormi is the rarest and most elusive #stork in Asia, and one of the world’s most threatened. Currently listed as #Endangered by the IUCN Red List, with fewer than 500 individuals remaining in the wild, their continued survival hangs by a thread in #Malaysia #Indonesia #Thailand and #Brunei. These elegant, black-and-white #birds once ranged widely across the Sundaic region. Today, their numbers are spiralling due to large-scale #deforestation for #palmoil plantations, logging, and infrastructure projects like dams and roads that slice through their forest home.

Peat swamp #forests—critical for nesting and foraging—are rapidly disappearing. But you can help turn the tide. Use your wallet as a weapon to protect these remarkable birds. Choose products that are 100% #palmoilfree and support indigenous-led conservation. #BoycottPalmOil #Boycott4Wildlife #Vegan

Storm’s #Storks have bright red and yellow faces and live in #Malaysia 🇲🇾 and #Indonesia 🇮🇩. They’re #endangered due to #PalmOil #deforestation 🌴🔥 and hunting 🏹 Fight for them when you #BoycottPalmOil 🌴🧐⛔️ #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/05/storms-stork-ciconia-stormi/

Raising two chicks per year, monogamous Storm’s #Storks of #Thailand 🇹🇭 #Malaysia 🇲🇾 and #Indonesia 🇮🇩are #endangered due to #deforestation for #rubber and #palmoil. Resist for them when you shop #BoycottPalmOil 🌴🩸🚜🔥🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/02/05/storms-stork-ciconia-stormi/

https://youtu.be/YC-5PstWy3A?si=MdZcfzu9in0ZWeL_

Appearance and Behaviour

With their sleek black plumage, brilliant white undertail, and arresting red facial skin encircled by a yellow eye ring, Storm’s Storks are unmistakeable once seen—if seen at all. Adults stand at 75–91 cm tall, their red legs often stained white from perching high in the canopy. They are silent outside the breeding season but may utter soft whistling or a frog-like call at the nest.

Unlike many storks, they are shy and solitary, rarely seen in groups. They glide high above the forest on thermals, and are often seen alone or in pairs near quiet, muddy riverbanks. Nesting high in tall trees, often overhanging rivers, they raise just two chicks a year with intense parental care and secrecy.

Diet

Storm’s Stork feeds primarily on small fish, frogs, worms, aquatic insect larvae and sometimes crustaceans and grasshoppers. They stalk quietly along shaded forest streams and oxbow lakes, moving slowly and deliberately. Parents regurgitate these prey items into the nest for their young, with foraging usually taking place 2–3 km away from their nesting site.

Reproduction and Mating

Monogamous pairs construct large twig nests high in the canopy, often reusing the same nest over several years. Nesting takes place in primary forest close to rivers, with clutches of two eggs and chicks fledging after approximately 90 days. Breeding displays include aerial flips and ground-based mutual bowing. Both parents take turns incubating the eggs and feeding the chicks, although the female tends to remain longer at the nest.

Geographic Range

Storm’s Stork occurs at extremely low densities across Borneo (Malaysia, Brunei, Indonesia), Sumatra, Peninsular Malaysia, and southern Thailand. Borneo is its core range, especially in Kalimantan and Sabah, where it persists in lowland peat swamps and riverine forests. Once present across the Greater Sundas, it is now extinct or nearly so in Thailand and Myanmar. In Sumatra, populations remain on the Kampar Peninsula, Way Kambas, and Siberut. In Peninsular Malaysia, only small relict populations exist, mostly within Taman Negara.

Threats

Ciconia stormi is native to the swamp and plains-level forests of the Greater Sundas, where it occurs at a very low density and nowhere is numerous. Over the past three generations (31 years: 1992–2023), it is suspected of having declined rapidly (40–60%) in response to industrial removal of its habitat for agro-industry plantations, particularly oil-palm and rubber. Its global population size is uncertain, but probably numbers 300–1,750 mature individuals; with ongoing habitat loss compounded by forest fires which may increase with frequency in response to climate change, this species is considered to be a high risk of extinction in the near-term. Accordingly, it is listed as Endangered.

IUCN Red list

• Widespread deforestation for palm oil and rubber plantations has destroyed much of the lowland forest habitat that Storm’s Stork depends on.

• Peat swamp forests, their stronghold in Borneo, are being drained, logged and set alight, especially during El Niño years.

• Logging roads fragment the forest and degrade rivers through erosion and sedimentation, reducing aquatic prey.

• Forest fires intensify due to human activities, especially in drained peatlands, further eliminating habitat and nesting sites.

• Hydropower projects, like the Chiew Larn Dam in Thailand, have flooded large tracts of prime habitat.

• Hunting still occurs, though not the primary driver of decline. These sensitive birds abandon nests if disturbed.

• Captive trade was a minor historic threat; however, tamed birds in zoos are unlikely to be rewilded successfully.

• Climate change and habitat fragmentation create uncertain future conditions, especially for isolated populations on Sumatra and the Malay Peninsula.

Take Action!

Storm’s Stork is a symbol of everything we stand to lose through the reckless destruction of rainforests. You have power to stop this.

Use your wallet as a weapon and boycott palm oil. Refuse to buy from companies that drive deforestation. Support indigenous-led agroecology. Speak out against the destruction of Southeast Asia’s peat swamp forests. Take action every time you shop and #BoycottPalmOil #Boycott4Wildlife, be #Vegan!

FAQs

How many Storm’s Storks are left in the wild?

Estimates suggest only 260–500 individuals remain globally. Around 240–1,600 mature individual birds may persist in Borneo, especially in Kalimantan. Sumatra’s population may be as low as 50–100 mature birds, while Peninsular Malaysia and Thailand hold fewer than 10 pairs each (BirdLife International, 2021; Martin et al., 2024).

How long do Storm’s Storks live?

Although exact data is scarce, storks in the genus Ciconia are long-lived, with some individuals living more than 20 years in the wild. Their slow reproductive rate and long lifespan make population recovery difficult after sharp declines (Danielsen et al., 1997; BirdLife International, 2021).

Why is palm oil so destructive for Storm’s Stork?

Palm oil expansion targets the very peat swamp and lowland forests Storm’s Stork calls home. These habitats are easy to access and commercially valuable, making them first to be logged, drained, and cleared. The result is mass habitat loss, water pollution, fire risk, and collapsing food chains that leave the storks with nowhere to nest or feed (Miettinen et al., 2011; Harrison et al., 2016).

Are Storm’s Storks affected by hunting or the pet trade?

They are hunted opportunistically by forest dwellers and poachers, especially as access increases through roads. However, hunting is not the main cause of their decline. The pet trade spiked in the late 1980s, but today, habitat loss remains the overwhelming threat (BirdLife International, 2021; Martin et al., 2024).

Support the conservation of this species

Reko Forest

Further Information

BirdLife International. 2023. Ciconia stormi. The IUCN Red List of Threatened Species 2023: e.T22697685A224541343. https://dx.doi.org/10.2305/IUCN.UK.2023-1.RLTS.T22697685A224541343.en. Accessed on 23 March 2025.

BirdLife International. (2021). Ciconia stormi. The IUCN Red List of Threatened Species 2021: e.T22697655A194974787. https://dx.doi.org/10.2305/IUCN.UK.2021-3.RLTS.T22697655A194974787.en

Martin, B., Staniewicz, A., Darmansyah, S., & Karo, I. (2024). Records of the Endangered Storm’s Stork Ciconia stormi in East Kutai, East Kalimantan, Indonesia, and notes on its conservation in Borneo. ResearchGate. https://www.researchgate.net/publication/381294067

Wikipedia contributors. (n.d.). Storm’s stork. Wikipedia. Retrieved March 22, 2025, from https://en.wikipedia.org/wiki/Storm%27s_stork

Storm’s Stork Ciconia stormi

How can I help the #Boycott4Wildlife?

Take Action in Five Ways

1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.

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Wildlife Artist Juanchi Pérez

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Mel Lumby: Dedicated Devotee to Borneo’s Living Beings

Read more

Anthropologist and Author Dr Sophie Chao

Read more

Health Physician Dr Evan Allen

Read more

The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

Read more

How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

Read more

3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.

https://twitter.com/CuriousApe4/status/1526136783557529600?s=20

https://twitter.com/PhillDixon1/status/1749010345555788144?s=20

https://twitter.com/mugabe139/status/1678027567977078784?s=20

4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.

5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here

#Bird #birds #Borneo #Boycott4wildlife #BoycottPalmOil #Brunei #climateChange #dams #deforestation #EastKalimantan #endangered #EndangeredSpecies #fires #ForgottenAnimals #hunting #hydroelectric #illegalPetTrade #Indonesia #Kalimantan #Malaysia #mining #palmoil #palmoilfree #poaching #rubber #SouthEastAsia #SouthKalimantan #stork #Storks #StormSStorkCiconiaStormi #Sumatra #Thailand #timber #vegan #Wetlands

Tapanuli Orangutan Pongo tapanuliensis

Tapanuli Orangutan Pongo tapanuliensis

IUCN Red List: Critically Endangered

Locations: Found only in the Batang Toru Ecosystem in North Sumatra, Indonesia.

The Tapanuli #Orangutan Pongo tapanuliensis is the most endangered #greatape species on Earth, with fewer than 800 individuals surviving in the wild. Listed as Critically Endangered by the IUCN, they are confined to a tiny mountainous area of primary rainforest in the Batang Toru Ecosystem #Indonesia. Their survival is threatened by relentless industrial expansion—#hydroelectric dams, gold mines, geothermal projects—and vast deforestation for palm oil and rubber plantations. As a keystone species, their survival is vital to the entire ecosystem. We must act urgently to protect them. #BoycottPalmOil #Boycott4Wildlife

https://youtu.be/7VxGIH5o6Wg

Just 800 Tapanuli Orangutans remain alive due to #palmoil and #mining #deforestation. If you find their imminent #extinction a disgrace 😡‼️ – there’s something you can do! #BoycottPalmOil 🌴☠️🚫 #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2021/01/19/tapanuli-orangutan-pongo-tapanuliensis/

The rarest species of #orangutan, the #Tapanuli is on the verge of being lost due to #palmoil and #mining #deforestation destroying 80% of their range. Say no to #ecocide ⛔️🙊🔥🌴🪔 when u shop #BoycottPalmOil #Boycott4Wildlife @palmoildetect.bsky.social https://palmoildetectives.com/2021/01/19/tapanuli-orangutan-pongo-tapanuliensis/

Appearance and Behaviour

With expressive faces and a deep orange coat, the Tapanuli Orangutan shares similarities with their Sumatran Orangutan and Bornean Orangutan cousins, but they are genetically and physically distinct. They possess frizzier hair, smaller skulls, flatter faces, and a more prominent moustache. Adult males have uniquely shaped flanges and emit a long call that is subtly different from other orangutans, showing acoustic divergence linked to genetic isolation.

Tapanuli Orangutans live solitary lives or in small, loose social groups. They are primarily arboreal, building elaborate sleeping nests in the forest canopy each night. Recent drone studies by Rahman et al. (2025) confirmed their high canopy preference, and the use of thermal sensors detected individuals invisible to the human eye. These shy forest dwellers avoid human presence and vanish into the dense trees with startling ease.

Diet

Dietary studies from the Tapanuli Orangutan Research Station (Arief & Mijiarto, 2024) recorded 91 plant species consumed, including fruits, young leaves, flowers, bark, and insects. While fruit forms the core of their diet, they also consume termites and other invertebrates when fruit is scarce. Figs, durians, and forest fruits are critical seasonal food sources, and loss of these plants due to palm oil plantations may lead to starvation.

Reproduction and Mating

Tapanuli Orangutans have an extremely slow reproductive rate. Females give birth once every 6–8 years after a gestation of 8.5 months. Infant orangutans remain with their mothers for up to 9 years, learning complex forest survival skills. This slow life history makes them exceptionally vulnerable—losing even a few individuals per year could doom the entire species. Population viability studies predict an 83% decline over three generations without immediate intervention (Wich et al., 2016).

Geographic Range

Once found across a vast swathe of southern Sumatra, the Tapanuli Orangutan now survives in only three isolated forest blocks of the Batang Toru Ecosystem—just 1,500 km². Only 10% of this is formally protected. Historical records suggest they once roamed as far south as Jambi and Palembang, but massive deforestation and human persecution have erased them from most of their former range. Their current habitat is dissected by roads, mines, and farmland.

Threats

The Tapanuli Orangutan was until relatively recently more widespread, with sightings further south in the lowland peat swamp forests in the Lumut area (Wich et al. 2003) and several nests encountered during a rapid survey in 2010 (G. Fredriksson pers. obs.). The forests in the Lumut area have in recent years almost completely been converted to oil-palm plantations.

IUCN Red List

Agro-industrial Expansion for Palm Oil and Rubber

The most significant threat to the Tapanuli Orangutan (Pongo tapanuliensis) is the relentless conversion of their highland forest habitat into industrial monocultures—particularly palm oil plantations, but also rubber and coffee. A 2024 study highlighted how forest clearance for oil palm, coffee, and rubber cultivation in the Batang Toru Ecosystem has devastated vital orangutan habitat, triggering migration into village gardens and escalating human-orangutan conflict (Lesmana et al., 2024). Wich et al. (2016) further underscore that nearly 14% of the orangutan’s range lacks any form of protection and is especially vulnerable to conversion. Entire lowland forest systems, such as those in the Lumut area, have been obliterated and replaced with palm oil plantations. The habitat loss is not only large-scale but also permanent, given the legal backing often enjoyed by agribusiness in Sumatra.

Infrastructure Development: Hydroelectric dams, roads and gold mining

A controversial Chinese-funded hydropower project threatens to destroy 10% of the Tapanuli Orangutan’s population. Located in the highest-density area of their range, the project will fragment habitat and block genetic flow for Tapanuli Orangutans and make the population vulnerable to collapse (Wich et al., 2019; Lesmana et al., 2024).

Gold and silver mining operations have already cleared approximately 3 km² of orangutan habitat and continue to expand. Compounding these threats, newly constructed roads have opened up previously inaccessible areas, accelerating both forest encroachment and illegal wildlife trade. As highlighted in the Floresta Ambient study (2024), such development has profoundly altered orangutan behaviour, pushing them into conflict with nearby communities.

Illegal Logging and Land Speculation

Despite the 2014 reclassification of parts of the Batang Toru forest from production to protection status, logging continues under outdated or contested permits. One company retains a 300 km² logging permit that cuts through primary orangutan habitat (Wich et al., 2016).

This deforestation is often driven by speculative land grabbing, with companies clearing forest to increase the value of land holdings. Encroachment is further driven by economic migrants, particularly from Nias Island, who settle in these unallocated forests due to lack of land tenure regulation. These migrants frequently convert forested land to agriculture, directly encroaching upon orangutan territories and escalating poaching and human-wildlife conflict (Samsuri et al., 2023).

Human-Orangutan Conflict, Illegal Hunting and the Illegal Pet Trade

Hunting poses a severe and often overlooked threat to the Tapanuli Orangutan. Conflict killings occur when orangutans forage in fruit trees or crops near villages, with some individuals shot with firearms or air rifles during crop conflict. With such a small population, every death is devastating. Orangutan infants are often trafficked for the exotic pet trade after their mothers are killed. According to Wich et al. (2012), the species’ slow reproductive rate makes any loss of adult females—particularly those with offspring—catastrophic for population viability.

The Floresta Ambient (2024) study documents that fruit-bearing trees in village gardens are a primary attractant for orangutans, intensifying seasonal conflict. Despite laws prohibiting the capture and trade of orangutans under CITES Appendix I, enforcement remains weak, and the trade persists.

Take Action!

We are at a tipping point. Only decisive action will save the Tapanuli Orangutan:

• Boycott palm oil every time you shop – learn more here.
• Oppose and resist destructive hydroelectric projects like the Batang Toru dam.
• Support local conservation groups and indigenous-led protection of the Batang Toru forest.
• Demand a moratorium on mining and infrastructure projects in orangutan habitat.

#BoycottPalmOil #Boycott4Wildlife

FAQs

How many Tapanuli orangutans are left in the wild?

The Tapanuli orangutan (Pongo tapanuliensis) is the rarest great ape on Earth, with fewer than 800 individuals remaining in the wild. This species is confined to a single, highly fragmented population in the Batang Toru Ecosystem of North Sumatra. According to Wich et al. (2016), the total area of suitable habitat is just over 1,000 km², making their population extremely vulnerable to stochastic events, inbreeding, and continued habitat degradation. A 75-year population viability analysis predicted a staggering decline from ~1,489 individuals in 1985 to just 257 by 2060 without urgent intervention (Wich et al., 2019).

Surveys using innovative thermal drone technology in 2023 confirmed that detection rates are consistent between aerial and ground methods, affirming the grim reality of their numbers (Rahman et al., 2025). With extremely low reproduction rates (a female produces one offspring every 7–9 years), any mortality has a profound impact on population dynamics. The population’s isolation and the lack of genetic exchange further endanger its viability, pushing the species closer to extinction unless dramatic changes are made to protect and connect its remaining habitat (Nater et al., 2017).

How long do Tapanuli orangutans live?

In the wild, Tapanuli orangutans are believed to live approximately 30 to 40 years, with some individuals possibly reaching 50. In captivity, individuals can live up to 60 years when protected from threats and given regular medical care. However, data specific to Pongo tapanuliensis are limited, as they have only recently been recognised as a separate species (Nater et al., 2017). Like other great apes, their slow reproductive cycle means that females generally give birth once every 7–9 years, and juveniles remain dependent on their mothers for up to 8 years. This slow life history leaves them especially vulnerable to population crashes when faced with increased mortality from hunting, habitat loss, or conflict (Wich et al., 2019).

The longevity of these apes in the wild is severely compromised by anthropogenic threats. Conflict with humans over fruiting crops, road construction, and the development of hydropower dams has placed increasing stress on their ecosystem, reducing not only the lifespan of individuals due to direct killings but also the carrying capacity of their habitat. Without the intact rainforest necessary to support their dietary and nesting needs, lifespans are likely to decline further, particularly for juvenile apes displaced or orphaned by habitat destruction (Samsuri et al., 2023).

Why are Tapanuli orangutans disappearing?

Tapanuli orangutans are being driven to extinction by a lethal cocktail of deforestation, infrastructure development, mining, poaching, and habitat fragmentation. Between 1985 and 2007, lowland forest habitat below 500 m was reduced by 60% due to palm oil plantations, road construction, and smallholder agriculture (Wich et al., 2016). These losses have accelerated in recent years, with one of the most devastating developments being the Batang Toru hydroelectric dam, which threatens to sever key corridors connecting their small subpopulations and destroy 10% of their core habitat (Rahman et al., 2025).

In addition, illegal killings are rising due to human-orangutan conflict, especially where crops like durians and jackfruit attract hungry apes into village fields. Surveys in the Dolok Sipirok region found that most conflicts occurred on the edge of forest areas where agriculture has expanded, resulting in economic losses for local people and retaliation killings of orangutans (Floresta Ambient, 2024). These apes are also at risk from trafficking—juveniles are captured for the pet trade, and their mothers are often killed in the process. As these apes only give birth once every 7–9 years, even the loss of a few individuals each year can rapidly collapse the population.

Are Tapanuli orangutans affected by palm oil plantations?

Yes, palm oil expansion is one of the most significant threats to the Tapanuli orangutan’s survival. Forest clearance for palm oil plantations has already wiped out entire swathes of their historic range, especially in the lowland areas of Lumut. These forests were once part of their known distribution, but have now been almost entirely replaced by monocultures of oil palm (Elaeis guineensis) (Wich et al., 2016; Nater et al., 2017). Such plantations are ecologically barren for orangutans, offering no food, nesting sites, or safety, while exposing them to poaching and conflict with humans.

The construction of roads and industrial developments linked to palm oil has fragmented orangutan habitat, making it harder for individuals to move safely between feeding and nesting areas. This fragmentation reduces genetic diversity and increases the risk of inbreeding, which has already been detected in Tapanuli orangutan genomes (Nater et al., 2017). Beyond habitat loss, palm oil plantations bring human settlements, increased hunting, and indirect threats like noise pollution and chemical runoff. As seen across Sumatra and Borneo, the palm oil industry’s unchecked expansion continues to destroy the last refuges for Asia’s great apes, including the critically endangered Tapanuli orangutan.

Is poaching and illegal trade still a problem for Tapanuli orangutans?

Absolutely. Despite national and international protection, Tapanuli orangutans are still poached, particularly in areas where they forage on cultivated fruit trees, triggering conflict with farmers. According to Samsuri et al. (2023), human-wildlife conflict is one of the strongest predictors of orangutan mortality in the region. Infants are especially at risk from the pet trade; mothers are frequently killed to take babies alive. These infants are then smuggled and sold illegally, often under the guise of ecotourism or exotic pet ownership.

Lack of enforcement is a major factor behind the persistence of illegal trade. While Indonesia has laws against orangutan capture and trade, penalties are rarely enforced and often misunderstood by local communities (Lesmana et al., 2024). Furthermore, conservation areas are often poorly monitored. Forest edge communities facing economic hardship may view orangutans as pests or potential profit. Unless conservation is led by local people and grounded in economic alternatives to poaching and deforestation, the illegal killing of orangutans will continue unchecked.

Can drones help monitor their numbers?

Yes. A 2023 drone study (Rahman et al., 2025) showed thermal drones are effective in detecting orangutans through dense canopy, offering a non-invasive tool for population monitoring.

Further Information

Arief, H., & Mijiarto, J. (2024). Food diversity of the Tapanuli Orangutan (Pongo tapanuliensis) in the Tapanuli Orangutan Research Station Plan, North Sumatra. Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan, 14(2), 376–388.  https://doi.org/10.29244/jpsl.14.2.376

Arief, H., & Mijiarto, J. (2024). The human and Tapanuli orangutan (Pongo tapanuliensis) conflict in the tropical mountain rainforest ecosystem, Indonesia. Floresta e Ambiente, 31(1). https://doi.org/10.1590/2179-8087-FLORAM-2023-0019

Lesmana, Y., Basuni, S., & Soekmadi, R. (2024). Ecosophy as a form of protection for the Tapanuli Orangutan (Pongo tapanuliensis) in the Batang Toru Landscape, North Sumatra. Biodiversitas, 25(11), 4535–4542. https://doi.org/10.13057/biodiv/d251152

Nater, A., Mattle-Greminger, M. P., Nurcahyo, A., Nowak, M. G., De Manuel, M., Desai, T., & Lameira, A. R. (2017). Morphometric, behavioural, and genomic evidence for a new orangutan species. Current Biology, 27(22), 3487–3498. https://doi.org/10.1016/j.cub.2017.09.047

Nowak, M.G., Rianti, P., Wich , S.A., Meijaard, E. & Fredriksson, G. 2017. Pongo tapanuliensis. The IUCN Red List of Threatened Species 2017: e.T120588639A120588662. https://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T120588639A120588662.en. Downloaded on 24 January 2021.

Rahman, D. A., Putro, H. R., Mufawwaz, T. A., Rinaldi, D., Yudiarti, Y., Prabowo, E. D., Arief, H., Sihite, J., & Priantara, F. R. N. (2025). Developing a new method using thermal drones for population surveys of the world’s rarest great ape species, Pongo tapanuliensis. Global Ecology and Conservation, 58, e03463. https://doi.org/10.1016/j.gecco.2025.e03463

Samsuri, A., Zaitunah, A., Ashari, R. H., & Kuswanda, W. (2023). Biophysical and anthropogenic factors affecting human and Tapanuli orangutan (Pongo tapanuliensis) conflict in Sumatran tropical rainforest, Indonesia. Environmental & Socio-economic Studies, 11(4), 77–91. http://bazekon.icm.edu.pl/bazekon/element/bwmeta1.element.ekon-element-000171681828

Wich, S. A., Fredriksson, G. M., Usher, G., & Kühl, H. S. (2019). The Tapanuli orangutan: Status, threats, and steps for improved conservation. Conservation Science and Practice, 1(4), e33. https://doi.org/10.1111/csp2.33

Tapanuli Orangutan Pongo tapanuliensis

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The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert

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How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy

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