CR

Tana River Mangabey

Cercocebus galeritus

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Tana River mangabey faces severe habitat destruction from agricultural expansion and dam construction along Kenya's Tana River, which has fragmented its already restricted riverine forest habitat. Small, isolated populations are highly vulnerable to local extinctions from flooding events and human encroachment. The species' extremely limited range of less than 60 km along the Tana River makes it particularly susceptible to catastrophic events and genetic bottlenecks.

Threat summary

Habitat

Endemic to the narrow strip of riverine gallery forests along Kenya's Tana River, particularly in areas with dense canopy cover and proximity to water sources. The species depends on mature forest patches with diverse tree species for feeding and nesting, typically found within 1-2 kilometers of the main river channel.

Forest· major

Conservation measures underway

Site/area protectionResource & habitat protectionSpecies recoveryLegislation

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Frequently asked questions

Why is Tana River Mangabey classified as Critically Endangered?
Tana River Mangabey is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. The Tana River mangabey faces severe habitat destruction from agricultural expansion and dam construction along Kenya's Tana River, which has fragmented its already restricted riverine forest habitat. Small, isolated populations are highly vulnerable to local extinctions from flooding events and human encroachment. The species' extremely limited range of less than 60 km along the Tana River makes it particularly susceptible to catastrophic events and genetic bottlenecks.
Where does Tana River Mangabey live?
Tana River Mangabey occurs in Kenya. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Tana River Mangabey?
The main threats to Tana River Mangabey are 1.1, 11.4, 2.1, and 2.3. The full IUCN-classified threat record for this species is detailed on the species page.

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