Black colobus monkeys
Male Wt. 10.9kg Female Wt. ?
Coat: Totally black, Skin: Dark, Brain size: Not known,
Locomotion: Quadruped but frequently swing by arms below branches, Longevity: More than 20 years
West Africa (Cameron and Gabon)
Habitat: low land rain forests in Western Africa, also in the mountains of Bioko
Home range: In Cameron 60 ha and in Gabon 84 ha, Day range: 9 days
Population density: 25-30 individuals per km.
% Fruit, leaves, etc. 53% of the annual diet is made up of seeds, which, with young leaves, are the preferred items. Seeds are eaten from different plants in the forest, and leaves are eaten from relatively uncommon deciduous trees. However, they eat mature leaves heavily when seeds and young leaves are scarce.
Techniques to get food: treefall foraging and climbing plants and tree saplings.
Group size: 9-5 individuals, Composition: 6 females and between 1 and 3 males in each group on average, Mating system: matrilineal-multi-male.
For instance, a group of colobus satanas studied in Gabon contained 5 adult females and 2 adult males. Later, 1 adult male and 1 adult female with a young infant left the group, and 2 adult females entered the group. The female that left the group was seen in a neighboring group.
Territorial aggressiveness consists of vocal and physical display in males.
Topics of special interests:
Specific information about Reproduction and Parental Care were not found.
J. R. NAPIER, P. H. NAPIER, 1976, A HANDBOOK OF LIVING PRIMATES, MORPHOLOGY, ECOLOGY AND BEHAVIOUR OF NONHUMAN PRIMATES, ACADEMIC PRESS, LONDON, NEW YORK.
A. G. DAVIS, J. F. OATES, 1994, COLOBINE MONKEYS: THEIR ECOLOGY, BEHAVIOUR, AND EVOLUTION, CAMBRIDGE UNIVERSITY PRESS, CAMBRIDGE.