An adult monk saki monkey (Pithecia monachus), near the Oxbow lake Atun Poza, Iquitos, Peru, South America

A pair of adult Isabel's monk saki monkeys, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

A pair of adult Isabel's monk saki monkeys, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, leaping in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, feeding in a tree within the Pacaya Samiria Preserve, Peru.

An adult Isabel's monk saki monkey, Pithecia isabela, sitting in a tree within the Pacaya Samiria Preserve, Peru.

White-faced saki (Pithecia pithecia), Rainforest Pyramid, Moody Gardens, Galveston island, Gulf of Mexico, Texas, United States of America

Captive adult Monk saki (Pithecia monachus), San Francisco Village, Loreto, Peru, South America

White-Headed Saki, (Pithecia pithecia), two adult females, social behaviour, South America

White-faced- or Golden-faced- or Guianan Saki (Pithecia pithecia), Monkey Zoo, Apenheul, Netherlands, Europe

White-faced- or Golden-faced- or Guianan Saki (Pithecia pithecia), Monkey Zoo, Apenheul, Netherlands, Europe

White-faced saki (Pithecia pithecia), adult, female, sitting on tree, alert, captive

White-faced saki (Pithecia pithecia), adult, male, sitting on tree, alert, captive

White-faced Saki also known as the Guianan Saki or Golden-faced Saki (Pithecia pithecia)