Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) male looking down from branch. Sahamalaza, Madagascar.

Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) female in tree. Sahamalaza, Madagascar.

Wim van den Heever / Bare-faced curassow (Crax fasciolata) portrait of female, Pantanal, Brazil.

Edwin Giesbers / Blue-eyed / Sclater's black lemur (Eulemur flavifrons) male with arm on female's back, captive, endemic to Madagascar., Critically Endangered.

Nick Garbutt / Male Bare-faced Curassow (Crax fasciolata) near Araras Lodge, Mato Grosso, Northern Pantanal, Brazil, South America.

Nick Garbutt / Bare-faced Curassow (Crax fasciolata) male and female, Near Araras Lodge, Mato Grosso, Northern Pantanal, Brazil, South America.

Edwin Giesbers / Sclater's black lemur (Eulemur macaco flavifrons) Captive, the Netherlands. Critically Endangered.

Gabriel Rojo / Bare-faced curassow (Crax fasciolata) running across the Transpantaneira route, car in background. Pantanal, Mato Grosso, Brazil. 2017.

Ernie Janes / Bare-faced curassow (Crax fasciolata) portrait, captive, occurs in South America.

Ernie Janes / Blue-eyed black lemur (Eulemur flavifrons) male, captive, occurs in Sulawesi. With digitally added leaves.

Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) female climbing tree, looking at camera with curiosity. Sahamalaza, Madagascar.

Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) female in tree, portrait. Sahamalaza, Madagascar.