Lisa Hoffner / Iain Douglas-Hamilton and Gilbert Sabinga looking at the ave the Elephants database, Kenya. Model released

Roland Seitre / Black-handed spider monkey (Ateles geoffroyi) juveniles, Project Zoo Ave released animals. Monteverde Cloud Forest Reserve (Reserva Biolgica Bosque Nuboso Monteverde), Pilas de Canjel, Peninsula de Ni...

Roland Seitre / Black-handed spider monkey (Ateles geoffroyi) juveniles, Project Zoo Ave released animals. Monteverde Cloud Forest Reserve (Reserva Biolgica Bosque Nuboso Monteverde), Pilas de Canjel, Peninsula de Ni...

Roland Seitre / Black-handed spider monkey (Ateles geoffroyi) jumping through trees, captive at Projet Zoo Ave rehabilitation centre, Reserva Biologica Bosque Escondido, Pilas de Canjel, Peninsula de Nicoya, Costa Ri...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) walking across branch with curled tail. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo A...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) mother resting with baby on back. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, Sa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) mother climbing with baby on back. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, S...

Roland Seitre / Black-handed Spider Monkeys (Ateles geoffroyi) climbing around feeding barrel. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...