The white-headed or cotton-headed tamarin is a Platyrrhini primate species with daytime and territorial habits which inhabits in the forests boundary or in secondary jungles in the Northwest Colombia. They have a white-hairy crest starting in the front and ending in the nape which falls behind. The back is brown, arms and legs are white or yellowy and the tail is orange at the base and black at the tip. They weigh about 500 g and eat fruit, nectar, fresh leaves, insects and lizards. They live in familiar groups with 3-13 individuals that can join other groups or remain in groups of 20 individuals as maximum. The pregnancy period lasts about 170 days and 1-3 babies are born. Mothers carry out their offspring during the first week; later, their father and other group individuals take care of the offspring, but they give the babies to the mother in order to nurse.