A female Sumatran orangutan sits in a newly made day nest as her baby plays in the background

The Sumatran orangutan (Pongo abelii) is Critically Endangered (IUCN) and only found in pockets of the Indonesian island of Sumatra.

Gunung Leuser National Park, Bukit Lawang, Sumatra, Indonesia.

Photo: Andrew Walmsley
16/04/14