Edwin Giesbers / Siberian crane (Grus leucogeranus) preening. Captive, critically endangered.

Rod Williams / Black bearded saki monkey {Chiropotes satanas} female, captive, from Brazil and Guyana, critically endangered

Luiz Claudio Marigo / Bearded saki monkey {Chiropotes chiropotes} in rainforest, Amazonia, Brazil

Claus Meyer / Red-backed Saki (Chiropotes satanas satanas), Amazon, Brazil

Claus Meyer / Red-backed Saki (Chiropotes satanas satanas) feeding on forest floor, Amazon, Brazil

Claus Meyer / Red-backed Saki (Chiropotes satanas satanas) calling, Amazon, Brazil

Claus Meyer / Red-backed Saki (Chiropotes satanas satanas) endangered, portrait, Amazon, Brazil

Rob Cousins / Black saki / bearded monkey {Chiropotes satanas} portrait, Brazil, captive, Critically Endangered