Behavior

All members of the subfamily Colobinae are diurnal and most species are arboreal in habits. In all cases, locomotion is typically quadrupedal, although suspensory behavior is also quite common during arboreal feeding. Gregarious social groups that move around and feed as relatively cohesive units are formed by all species, but these vary from multi-male troops through one-male troops to a few rare cases of monogamy. In some species that exhibit one-male groups, surplus males form bachelor male groups. Moreover, there are certain species in which individual groups temporarily combine to form larger bands. In most species, females tend to stay in their natal groups, whereas males migrate at round the time of sexual maturity. However, there are exceptions. For example, in guerezas (genus Colobus), males migrate between groups, whereas in red colobus (genus Piliocolobus) it is the females that migrate.

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