FaunaHub

Guenon (Cercopithecus neglectus)

MammalPrimateAfrica

De Brazza's monkey (Cercopithecus neglectus), a guenon with a white beard and orange brow band.

De Brazza's monkey (Cercopithecus neglectus), a guenon.

Image: EgorovaSvetlana, CC BY-SA 4.0, via Wikimedia Commons.

Overview

Guenons (genus Cercopithecus) are a large and varied group of African monkeys, many of them among the most colourful and ornately marked of all primates. They are slim, long-tailed, agile monkeys of forests and woodlands, and different species sport bold facial patterns, beards, brow bands, nose spots, and ear tufts. De Brazza's monkey (Cercopithecus neglectus), shown here, is a striking example, with a white beard, an orange crescent across the brow, and a grizzled grey body.

These distinctive face patterns are thought to help guenons recognise their own species — important because several different guenons often share the same forest.

Note: “guenon” covers many species; details here use De Brazza's monkey as a reference. Treat general statements as approximate and verify against authoritative sources.

Habitat & Range

Guenons live across sub-Saharan Africa, mostly in forests — rainforest, swamp forest, gallery forest, and montane forest — though some species also use woodland and savanna edges. De Brazza's monkey favours swampy and riverside forest in central Africa, keeping close to water and dense cover.

Diet

Most guenons are omnivores that lean heavily on fruit, supplemented by leaves, flowers, seeds, gum, insects, and other small animals; the balance varies by species. They often carry food in cheek pouches while foraging. De Brazza's monkey eats mainly fruit and seeds, along with leaves and invertebrates.

Behavior

Guenons are typically social, living in groups usually led by a single adult male with several females and young, and they are agile, mostly tree-dwelling, and active by day. Many species form mixed-species troops, foraging alongside other guenons (and sometimes other monkeys), which improves predator detection — and their bold, species-specific face markings help individuals tell the species apart. De Brazza's monkey is quieter and more secretive than many guenons, relying on camouflage and stillness when threatened.

Human Interaction & Conservation

Guenons are important seed dispersers and a colourful part of African forests, and many people know them as some of the most beautiful monkeys. Several species are common, but a number of forest-restricted guenons are threatened by deforestation and hunting for bushmeat. Consult the IUCN Red List for species-specific status.

More photos of the guenon

A De Brazza's monkey showing its distinctive white beard.

De Brazza's monkey (Cercopithecus neglectus).

Image: Jan Ebr, CC BY 4.0, via Wikimedia Commons.

Frequently Asked Questions — Guenon

What is a guenon?
A guenon is an African monkey of the genus Cercopithecus, a large group known for slim builds, long tails, and especially their colourful, ornately patterned faces. They are mostly forest-dwelling, fruit-eating Old World monkeys, and include well-known species such as De Brazza's monkey, the mona monkey, and the blue monkey.
Why do guenons have such colourful faces?
Their bold, species-specific face patterns — beards, brow bands, nose spots, ear tufts — are thought to help guenons recognise members of their own species. This matters because several guenon species often live and forage together in the same forest, so clear visual 'badges' help avoid confusion and interbreeding.
Do guenons live with other monkey species?
Often, yes. Many guenons form mixed-species groups, foraging and travelling alongside other guenons and sometimes other monkeys. Living together gives more eyes to watch for predators, and their distinctive face markings help the different species keep track of one another.
What do guenons eat?
Most guenons are omnivores that rely heavily on fruit, adding leaves, flowers, seeds, gum, insects, and small animals depending on the species and season. Many use cheek pouches to gather food quickly while foraging, and as fruit-eaters they help disperse seeds.

Sources and further reading

Authoritative wildlife references used for general educational context. Conservation status should always be verified against current IUCN Red List data. External links open in a new tab.