Ole Jorgen Liodden / Golden monkey (Cercopithecus kandti) foraging, portrait, Virunga, Rwanda.

Ingo Arndt / Golden monkey (Cercopithecus mitis kandti) looking down from tree, Parc National des Volcans, Rwanda

Laurie Hedges / Golden Monkey (Cercopithecus kandti), endangered species monkey on the congo-nile dividing range, Rwanda.

Visuals Unlimited / Golden Monkey (Cercopithecus mitis kandti), Volcanoes National Park, Rwanda.

Mary McDonald / Golden monkey {Cercopithecus mitis kandti} amongst bamboo, Virunga Mountians, Western Rwanda, Endangered

Mary McDonald / Golden Monkey {Cercopithecus mitis kandti} troop in trees, Virunga Mountains, Rwanda.

Paul Hobson / Golden Monkey {Cercopithecus mitis kandti} adult in bamboo, Parc National des Volcans, Rwanda

Paul Hobson / Golden Monkey {Cercopithecus mitis kandti} adult amongst vegetation, Parc National des Volcans, Rwanda.

Paul Hobson / Golden Monkey {Cercopithecus mitis kandti} adult amongst vegetation, Parc National des Volcans, Rwanda.

Paul Hobson / Golden Monkey {Cercopithecus mitis kandti} adult, Parc National des Volcans, Rwanda.

Jeff Foott / Golden Monkey (Cercopithecus kandti) pair, Parc National des Volcans, Rwanda

Jeff Foott / Golden Monkey (Cercopithecus kandti), Parc National des Volcans, Rwanda

Jeff Foott / Golden Monkey (Cercopithecus kandti), Parc National des Volcans, Rwanda

D. Parer & E. Parer-Cook / Golden Monkey (Cercopithecus kandti), Parc National des Volcans, Rwanda

Sean Crane / Golden Monkey (Cercopithecus kandti), Mgahinga Gorilla National Park, Uganda

Jeff Foott / Golden Monkey (Cercopithecus kandti), Parc National des Volcans, Rwanda

Jeff Foott / Golden Monkey (Cercopithecus kandti), Parc National des Volcans, Rwanda

Jeff Foott / Golden Monkey (Cercopithecus kandti) feeding, Parc National des Volcans, Rwanda

Jeff Foott / Golden Monkey (Cercopithecus kandti) feeding, Parc National des Volcans, Rwanda