<address id="99d99"></address>

    <address id="99d99"><nobr id="99d99"><meter id="99d99"></meter></nobr></address>

    <address id="99d99"></address>

    <form id="99d99"></form>

    <address id="99d99"></address>
    <form id="99d99"></form>

    <form id="99d99"><form id="99d99"></form></form>

    <sub id="99d99"></sub>

      <address id="99d99"><nobr id="99d99"><meter id="99d99"></meter></nobr></address>

          <address id="99d99"></address>
          <sub id="99d99"><listing id="99d99"></listing></sub>

            Home | Ungulates | About Us | Glossary | Links | Search | Contact Us
            An Ultimate Ungulate Fact Sheet
            Cephalophus ogilbyi
            Ogilby's duiker
            Click on the pictures above for larger views of the photographs
            Quick Facts Detailed Information References

            Classification
             

            Kingdom:
            Phylum:
            Class:
            Order:
            Suborder:
            Family:
            Subfamily:
            Genus:

            Animalia
            Chordata
            Mammalia
            Artiodactyla
            Ruminantia
            Bovidae
            Cephalophinae
            Cephalophus

            Common name:
            Scientific name:
            Other names:
            Ogilby's duiker
            Cephalophus ogilbyi
            Brooke's duiker (brookei), white-legged duiker (crusalbum), céphalophe d'Ogilby, Ogilbyducker, Duiquero de Ogilby, Odabohene, N'Chumjbi

            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.

            Similar species
            In the field, "red duikers" are often difficult to tell apart, especially as they flee. Even photographs can be a challenge, depending on the angle. The relatively pale golden coloration and narrow dorsal stripe are the most distinctive features of Ogilby's duiker. The white legs of the white-legged duiker (subspecies C. o. crusalbum) are diagnostic.

            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. The three subspecies are found in: West Africa (C. o. brookei), Nigeria, Cameroon, and Bioko, Equatorial Guinea (C. o. ogilbyi), and Gabon and Cameroon (C. o. crusalbum). The approximate range is depicted in the map below.

            Range Map
            (data from IUCN SSC Antelope Specialist Group, 2008)

            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.

            Quick Facts Detailed Information References

            香港赛马会精选资料大全