- A guenon that has a black face with white and yellow markings and bright blue skin on the rump, living in the forests of central Africa.
More example sentences
- Cercopithecus hamlyni, family Cercopithecidae
- Hamlyn's Monkey (Cercopithecus hamlyni), also known as the Owl-faced Monkey, is a species of Old World monkey that inhabits the bamboo and primary rainforests of the Congo.
- Owl-faced monkeys exist in small social groups in dense cover with abundant food.