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The western red colobus is frequently hunted by the common chimpanzee. [6] The members of this genus are found in western, central and eastern Africa, and the species have largely allo-or parapatric distributions. They are primarily arboreal and most are restricted to humid forests, but the Zanzibar red colobus prefers
Pennant's red colobus monkeys have been little studied, but their diet is likely to be similar to that of other red colobus monkeys. They mainly consist of fresh leaves supplemented by flowers, fruit, and seeds. They have specialist teeth that can macerate leaves and break up tough but pliant unripe fruit and the seeds embedded in the flesh.
The Tana River red colobus had been considered one of The World's 25 Most Endangered Primates. [6] [7] It was, together with the equally endangered Tana River mangabey, the main reason for the creation of the Tana River Primate Reserve in 1978, [8] but human encroachment within this reserve continues. [9]
The western red colobus grows to a head-and-body length of 450 to 670 mm (18 to 26 in) with a tail of 520 to 800 mm (20 to 31 in), and a weight of between 5 and 11 kg (11 and 24 lb). It has red or chestnut-brown head and limbs and black, slatey-grey or dark brown upper parts. It does not have long fringes of hair, or tufts of hair on the tail.
The Niger Delta red colobus is black on top from the head to the rump, becoming orange-brown on the sides and outer legs. The undersides and inner legs, and most of the arms are white. The hands and feet are black. The tail is red-brown on top and chestnut or maroon below, becoming darker towards the tip. It has white whiskers. [3] [4]
Preuss's red colobus (Piliocolobus preussi) is a red colobus primate species endemic to the Cross-Sanaga Rivers ecoregion. An important population occurs in Korup National Park , Southwest Province , Cameroon , but the species' distribution is localized (groups are frequently encountered near the main tourist camps).
In IUCN's 2008 and 2016 assessments, Bouvier's red colobus was classified as critically endangered with a note saying it was "possibly extinct". [1] No individuals had been seen in the wild since the 1970s and was thought to have lost at least 80% of its population since then, due to hunting and habitat loss. [1]
Oustalet's red colobus (Piliocolobus oustaleti) is a species of red colobus monkey. It lives in various types of forest in southern South Sudan, southern Central African Republic, northern Democratic Republic of the Congo and northeastern Republic of the Congo. [2] [3] It eats leaves, fruit, flowers, buds and possibly seeds.