Fiona Rogers / Sumatran orangutan (Pongo abelii) female 'Sandra' aged 22 years portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from those which were rele...

Fiona Rogers / Sumatran orangutan (Pongo abelii) female 'Pesec' aged 28 years portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from those which were relea...

Fiona Rogers / Sumatran orangutan (Pongo abelii) mature male 'Halik' aged 26 years lying down - portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from thos...

Suzi Eszterhas / Sumatran Orangutan (Pongo abelii) mother and playful baby aged 9 months, North Sumatra, Indonesia. Critically Endangered *Digitally removed highlight in background

Suzi Eszterhas / Long tailed macaque (Macaca fascicularis) trying to take banana from Sumatran Orangutan (Pongo abelii and young baby, North Sumatra, Indonesia. Critically Endangered

Anup Shah / Sumatran orang utan mother with baby up a tree above forest stream (Pongo pygmaeus abelii) Gunung Leuser NP, Sumatra, Indonesia

Anup Shah / Sumatran Orang utan female with young resting in nest made in tree (Pongo pygmaeus abelii) Gunung Leuser NP, Sumatra, Indonesia

Rod Williams / Sumatran orang utan {Pongo pygmaeus abelii} male portrait. Captive. Indonesia.

Anup Shah / Juvenile orang utan {Pongo abelii} Gunung Leuser NP Sumatra Indonesia

Anup Shah / Juvenile orang utan (Pongo abelii) swinging on liana over water Gunung Leuser NP Sumatra Indonesia

Anup Shah / Orang utan (Pongo abelii) mother with baby, Gunung Leuser NP, Indonesia.

Anup Shah / Juvenile orang utan (Pongo abelii) swinging on liana Gunung Leuser NP Sumatra Indonesia