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Mammals · Primates · Cercopithecidae

Drill

Mandrillus leucophaeus

Endangered

At very high risk of extinction in the wild in the near future.

Spotted something wrong?

The drill is a stocky primate related to the mandrill, with a glossy black face framed by a white crest and brightly coloured hindquarters. It is one of the most threatened primates in Africa and occupies a tiny range: south-west Cameroon, south-east Nigeria and the island of Bioko, in Equatorial Guinea. It lives in groups that work the forest floor looking for fruit, seeds, invertebrates and small vertebrates. Hunting for bushmeat and logging are its great threats.

Weight

12 kg – 36 kg

Size

60 cm – 90 cm

Life expectancy

28 years

Diet

Omnivore

Combines animal and plant food depending on availability.

Activity

Diurnal

Active mainly during the day.

Social structure

Herd

Lives in large groups as a strategy against predators.

Sighting difficulty

Hard

RainforestIslands
3countries4parks44same family

Fun facts

  • GeneralA close relative of the mandrill but without the coloured face; hunting has left it endangered.
  • Its range is one of the smallest of any mainland African primate: it fits between two rivers, the Cross and the Sanaga, plus the island of Bioko.
  • Unlike the mandrill, whose face is blue and red, the drill's is entirely black and it concentrates the colour at the rear, with mauve and pink tones that grow stronger in dominant males.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat and environment
Lowland rainforest and coastal forest of south-western Cameroon, Nigeria and Bioko
Size at birth
Born with its eyes open, clinging to its mother's fur from the first day
Sexual maturity
3.5 years
Gestation / incubation
5.9 months
Litter / clutch size
1

Sources consulted: https://es.wikipedia.org/wiki/Mandrillus_leucophaeus

Where to find it

Best time: All year round in the forests of Cameroon, Nigeria and the island of Bioko, by day; it is very wary and easier to detect by ear than by sight.

Loading map…

The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented.

Related species

Other species in the catalogue with the most in common with Drill — same habitat, park, country, tags or family.

Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family

How to help

The drill is classified as endangered. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 1 protected area — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about drill.

Comments

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See full glossary
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See its range on the interactive map→
Monte Alén National ParkEquatorial Guinea
KorupCameroon
Campo Ma'anCameroon
Cross RiverNigeria
Endangered

Preuss's Monkey

Allochrocebus preussi

Endangered

Red-capped Mangabey

Cercocebus torquatus

Putty-nosed MonkeyLeast Concern

Putty-nosed Monkey

Cercopithecus nictitans

Black ColobusVulnerable

Black Colobus

Colobus satanas

MandrillVulnerable

Mandrill

Mandrillus sphinx

Mona MonkeyNear Threatened

Mona Monkey

Cercopithecus mona

CountriesCameroon
ParksMonte Alén National ParkEquatorial Guinea
TagsOmnivore
Omnivore
Diurnal
In herds
Endangered
Rainforest
Islands
Mammal
Cameroon
Equatorial Guinea
Nigeria