Animal Database

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Animal Database
Animal Database
Ogilby's Duiker
Duiker ogilby's
Scientific Classification
Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Artiodactyla
Family Bovidae
Genus Cephalophus
Species C. ogilbyi
Conservation Status
Least Concern

Ogilby's duiker (Cephalophus ogilbyi), is a small antelope found in Sierra Leone, Liberia, Ghana, southeastern Nigeria, Equatorial Guinea's Bioko Island, and, possibly, Gabon.

The two former subspecies, the White-legged Duiker Cephalophus crusalbum and the Brooke's Duiker Cephalophus brookei, are considered as distinct species since 2011.

Physical Characteristics[]

Head and body length: 85-115 cm
Shoulder height: 55 cm
Tail length: 12-16 cm
Adult weight: 14-20 kg

This is a long-legged duiker with powerful hindquarters. The overall color is golden brown, although the belly is paler. A thin black stripe (1-6 cm wide) runs along the midline of the back, beginning at the shoulders and narrowing as it approaches the base of the tail. In Brooke's duiker (C. o. brookei), the stripe ends before reaching the tail, while in the two other subspecies (C. o. ogilbyi and C. o. crusalbum) the stripe continues onto the tail as a thin line. The tail is otherwise golden brown on top and white underneath, with a tuft of mixed white, black, and brown hairs at the tip. The legs are usually darker than the body, except in C. o. crusalbum, where the lower legs are bright white. The ochre face has a dark muzzle, white lower jaw, and distinct chestnut eyebrows. The forehead is bright rufous in color, topped with a sparse crest of longer hairs. Both sexes bear short, upward-curving horns that grow 8-12 cm long in males and 4-6 cm long in females.

Reproduction and Development[]

Nothing is known about the breeding or development of Ogilby's duiker. It has been reported that the young have speckled coats.

Ecology and Behavior[]

Ogilby's duiker is one of the least-known duikers. It is diurnal in nature, showing very little activity in the hours of darkness, but is very secretive. Foraging typically occurs in the morning and late afternoon. Ogilby's duikers may follow monkeys moving through the forest canopy in order to feed on fruits, seeds, and flowers that fall to the ground. The midday is often spent resting. The few reported observations of wild Ogilby's duikers suggest that individuals maintain small home ranges (approximately 0.1 km2 in size). The same areas are returned to nightly for sleeping, and latrine spots are used. The principal vocalization is a "wheet" call.

Family group: Solitary or in pairs.
Diet: Fruits and seeds, flowers, and leaves.
Main Predators: Leopard and small cats; on Bioko, drills and pythons are the  principal predators.

Habitat and Distribution[]

Ogilby's duiker inhabits primary rainforest, usually with a closed forest canopy. On Bioko Island, they may be found at elevations up to at least 2,260 m.

Conservation Status[]

IUCN Red List:Least Concern (2008)
CITES Listing: Appendix II (2012)
Threats: Habitat loss and hunting for bushmeat.

The estimated total population is 35,000 animals. Brooke's duiker (C. o. brookei) is the rarest (5,000 animals), while Ogilby's duiker (C. o. ogilbyi - 12,000 animals) and the white-legged duiker (C. o. crusalbum - 18,000 animals) are more common.