Mammals Active during the day

Moustached Monkey

Cercopithecus cephus

iNaturalist Wikipedia

Meet the 'masked' acrobat of the African canopy, known for its striking blue eyes and iconic white moustache. These social primates are the life of the rainforest, often found traveling in multi-species troupes.

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Quick Identification

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Size

Body length of 48-56 cm (19-22 in); tail length of 65-70 cm (26-28 in); weight ranges from 2.5-4 kg (5.5-9 lbs)

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Colors

Olive-brown to grayish-brown coat with a white or yellow sub-nasal 'moustache' and vibrant blue skin surrounding the eyes.

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Key Features

Distinctive white or yellow horizontal bar across the upper lip
Vibrant sky-blue skin surrounding the eyes
Long reddish-brown tail often twice the body length
Yellow-tinted cheek fur

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 7-10 AM, 3-6 PM

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Season Year-round

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Diet Primarily frugivorous (fruit-eating), favoring ripe fleshy fruits, but they are opportunistic omnivores that supplement their diet with insects, seeds, and tender leaves.

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Habitat Primary and secondary tropical rainforests, gallery forests near riverbanks, and occasionally flooded forest areas.

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Where Does the Moustached Monkey Live?

The Moustached Monkey is a signature species of the lush tropical heart of Central Africa. Its core range spans from the Sanaga River in Cameroon, stretching eastward through the Central African Republic and Gabon, and extending deep into the Republic of the Congo and the northern regions of the Democratic Republic of the Congo. It is also found in the northern enclave of Angola and on the island of Bioko in Equatorial Guinea. This species thrives in areas where the forest canopy is dense enough to provide both a diverse menu of fruit and protection from aerial predators.

Basemap © OpenStreetMap contributors

7 Countries

2.1M km² Range

Least Concern Conservation

Gabon Cameroon Republic of the Congo Democratic Republic of the Congo Equatorial Guinea Central African Republic Angola

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iNaturalist / Verified observation data

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Behavior

Moustached monkeys are highly social and energetic primates that live in groups typically led by a single dominant male and several females with their offspring. They spend the vast majority of their time high in the forest canopy, moving with impressive agility as they leap between branches. These monkeys are well-known for their complex vocalizations, which include loud chirps and 'hacks' to alert the troop of predators like crowned eagles or leopards.

A fascinating aspect of their behavior is their tendency to form polyspecific associations. This means they often travel and forage alongside other guenon species, such as Greater Spot-nosed monkeys or Red-tailed monkeys. By grouping together, they increase their chances of spotting predators and finding patchy food sources in the dense African rainforest, while the different species often focus on slightly different food types to avoid direct competition.

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Camera Tips

To capture the Moustached Monkey on camera, placement is the most critical factor. Since they are primarily arboreal and rarely descend to the forest floor, a standard ground-level trail camera will likely miss them. You need to mount your AI camera high in the mid-to-upper canopy, ideally between 10 and 20 meters up. Look for 'wildlife highways'—large horizontal branches or thick woody vines that connect different fruit-bearing trees. Angle the camera slightly downward along the length of the branch to capture the troop as they travel in single file.

While baiting is rarely used for these primates in a wild setting, placing a camera near a fruiting Fig (Ficus) or Uapaca tree during its peak season will significantly increase your success rate. These monkeys are creatures of habit and will revisit high-yield food sources daily until the fruit is depleted. Because they move quickly through the branches, ensure your camera is set to a high trigger speed and consider a multi-shot 'burst' mode or high-definition video to catch the subtle blue and white facial markings that distinguish them from other guenons.

Lighting in the rainforest can be challenging due to the thick canopy cover. If your camera allows for adjustable sensitivity, set it to trigger more easily during the low-light hours of dawn and dusk when the troop is most active. Avoid using a bright white flash at night as it may startle the troop if they are sleeping nearby; high-quality infrared sensors are preferred to capture natural behavior without causing distress to the group.

Similar Species

Species that look similar or are commonly confused with Moustached Monkey.

Red-tailed Monkey

Similar reddish tail, but lacks the blue eye skin and has a distinctive white heart-shaped spot on the nose.

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Frequently Asked Questions

Moustached Monkeys are strictly diurnal, meaning they are active during daylight hours. They usually peak in activity during the early morning and late afternoon when they forage for fruit and socialize.

Unless you live on the edge of a Central African rainforest, you won't find them in a typical backyard. In their native range, they are attracted to native fruiting trees like figs, oil palms, and various tropical fruit-bearing species.

Their diet is mostly comprised of ripe fruit, but they are opportunistic feeders that also consume a significant amount of insects (especially caterpillars and grasshoppers), seeds, and young leaves for protein.

No, they are shy forest specialists. While they may occasionally visit large gardens or plantations on the extreme periphery of tropical forests, they generally avoid high-density human settlements and urban areas.

While both have reddish tails, the Moustached Monkey is easily distinguished by the bright blue skin around its eyes and the distinct white or yellow horizontal 'moustache' bar across its upper lip, whereas the Red-tailed Monkey has a white heart-shaped spot on its nose.

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