Bernard Castelein / Coquerel's sifaka (Propithecus coquereli) in tree, relaxing, Ankarafantsika National Park, Madagascar

Bernard Castelein / Silky sifaka (Propithecus candidus) in tree, Marojejy National Park, Madagascar. Critically endagered species.

Lorraine Bennery / Sifaka de Decken (Propithecus deckenii), sitting in tree, Tsingy de Bemaraha National Park, Madagascar, Endangered, endemic.

David Pattyn / Diademed sifaka (Propithecus diadema diadema) pair, Maromizaha Reserve, Andasibe Mantadia area, eastern Madagascar. August.

Chien Lee / Verreaux's Sifaka (Propithecus verreauxi), Berenty Private Reserve, Amboasary, Madagascar

Chien Lee / Verreaux's Sifaka (Propithecus verreauxi) mother and young, Berenty Private Reserve, Madagascar

Suzi Eszterhas / Verreaux's Sifaka (Propithecus verreauxi) leaping, Berenty Private Reserve, Madagascar

Suzi Eszterhas / Verreaux's Sifaka (Propithecus verreauxi) leaping, Berenty Private Reserve, Madagascar

Suzi Eszterhas / Diademed Sifaka (Propithecus diadema) feeding, Andasibe-Mantadia National Park, Madagascar

Suzi Eszterhas / Coquerel's Sifaka (Propithecus coquereli) mother with three month old young, Madagascar

Cyril Ruoso / Verreaux's sifakas (Propithecus verreauxi) in Madagascar ocotillo (Alluaudia procera) trees Berenty, Madagascar.

Cyril Ruoso / Verreaux's sifaka (Propithecus verreauxi) two resting Berenty, Madagascar.