Kirk's red colobus is sometimes considered to be a subspecies of Pennant's red colobus, which would make its scientific name Procolobus pennantii kirkii.

Subspecies
None.

Life span
Unknown.

Statistics
Head and body length: Female: 53cm, Male: 63cm. Tail length: 42-80cm. Weight: Female: 7kg, Male: 10kg

Physical description
Kirk's red colobus have a ragged, tessellated coat of red, black & white - but there is much individual variation. They have a bare black face with pink lips and mouth, with a long, limp, pale crown of hair.

Distribution
They inhabit southern Zanzibar.

Habitat
They live in rainforest, acacia woodland, swamp and scrub habitats.

Diet
They feed mainly on fruit and seeds.

Behaviour
Kirk's red colobus live in multi-male, multi-female groups, with an average of 20 members. They are diurnal and arboreal.

Reproduction
Little is known about the reproductive biology of Kirk's red colobus.

Conservation status
This species is not listed by the 2000 IUCN Red List.