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, 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.

Captive adult Monk saki (Pithecia monachus), San Francisco Village, Loreto, Peru, 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 also known as the Guianan Saki or Golden-faced Saki (Pithecia pithecia)

Portrait of Guianan Saki