Pictures of pale-headed sakis, also known as the White-faced Saki (Pithecia pithecia).
The male and female of this species are easily distinguished because the male's face is white, but the female's is dark with narrow white stripes on the cheeks.
Sakis are active, tree-dwelling monkeys. Their diet consists mostly of fruit and seeds which they crack with their canine teeth. They also eat animal prey such as small birds and bats.
The White-faced Saki monkeys live in Northern South America in Brazil, Suriname, Guyana, and French Guiana.