Fiona Rogers / Silvered Leaf Monkey (Trachypithecus cristatus) mother with five month old baby, Bako National Park, Sarawak, Borneo, Malaysia

Anup Shah / Silvered Leaf Monkey (Trachypithecus cristatus) mother with week old baby in tree, Bako National Park, Sarawak, Borneo, Malaysia

Anup Shah / Silvered Leaf Monkey (Trachypithecus cristatus) female holding week old baby after it was handled roughly by another female, Bako National Park, Sarawak, Borneo, Malaysia

Sebastian Kennerknecht / Silvered Leaf Monkey (Trachypithecus cristatus) mother and young, Sabah, Borneo, Malaysia

Nick Garbutt / Female Silvered langur (Trachypithecus cristatus / Presbytis cristata) carrying young infant. Bako NP, Sarawak, Borneo, Malaysia

Bernard Walton / Silvered langur (Silver leaf) monkey {Presbytis cristata}, Malaysia

Sylvain Cordier / Silvery langur (Trachypithecus cristatus) baby suckling, Sabah, Malaysia, Borneo.

Thomas Marent / Silvered Leaf Monkey (Trachypithecus cristatus) mother with baby, Bako National Park, Sarawak, Borneo, Malaysia

Thomas Marent / Silvered Leaf Monkey (Trachypithecus cristatus) pair in mangrove swamp at low tide, Bako National Park, Sarawak, Borneo, Malaysia

Thomas Marent / Silvered Leaf Monkey (Trachypithecus cristatus) mother with baby, Bako National Park, Sarawak, Borneo, Malaysia

Thomas Marent / Silvered Leaf Monkey (Trachypithecus cristatus), Bako National Park, Sarawak, Borneo, Malaysia

Thomas Marent / Silvered Leaf Monkey (Trachypithecus cristatus), Bako National Park, Sarawak, Borneo, Malaysia