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Mountain Bongo

Critically endangered

Tragelaphus eurycerus isaaci

Description:

The mountain bongo is a critically endangered subspecies of the bongo, one of the largest forest antelopes, with a reddish-brown coat, with black, white and yellow-white markings. Both males and females have long, slightly spiralled horns. Bongos are rarely seen in large herds. Bulls are mostly solitary, while females with young form small herds of up to 10. They are mostly nocturnal.

A close up of an adult Mountain Bongo
Caption icon © Bongo Surveillance Project

Key facts

Population:

100

Estimated 100 individuals across four isolated locations in Kenya.

Diet:

Leaves
Bark
Sea Grass

Mountain bongos are mostly grazers, feeding on leaves, vines, bark and occasionally grass. They need salt in their diet and regularly visit mineral licks.

Habitat:

The mountain bongo is found in the montane forests of the Kenyan highlands, including the Aberdares and Mount Kenya.

Range:

Kenyan highlands

Threats

Habitat protection
Hunting
Disease

The decline of the mountain bongo has been caused by habitat loss and illegal hunting with dogs. Disease (such as rinderpest) caught from grazing cattle is also thought to have been a significant factor in their historic decline.

 

Conservation

Habitat protection and monitoring of the small remaining populations is critical for their survival, while captive breeding and reintroduction to Mount Kenya could also play a role (there are more mountain bongo in captivity than in the wild). Tusk supports the Bongo Surveillance Programme, which studies and protects their largest population of about 50 in the Aberdares.

Learn more about the projects

Did you know?

Native to the mountainous forests of Kenya and Tanzania, they are so rare that many people have never seen one in the wild.

Each bongo has a unique stripe pattern, which can help in identifying individuals in the wild.

Mountain bongos are primarily nocturnal, meaning they are most active during the night. This behaviour helps them avoid predators and the heat of the day, as well as take advantage of cooler temperatures for foraging.

Their vocalisations can include grunts, whistles, and snorts, which help them communicate over the dense forest terrain where visual contact is often limited.

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