The Sumatran orangutan once inhabited the entire Sumatran island in Indonesia. Today, it is restricted to the northern part of the island, particularly to the Leuser ecosystem in the Aceh province.
The major threats for its survival are habitat loss for agricultural plantations, especially oil palm, illegal and legal logging, and illegal pet trade. Fortunately, orangutans that have been rescued from illegal trade are sent to several sanctuaries and to the Bukit Tigapuluh National Park.
Sumatran orangutans are classified as Critically Endangered by the IUCN and are included in the Appendix I of CITES. Various private organizations in Indonesia are working to develop guidelines to improve industry management practices and mitigate conflict over agricultural and orangutan activities.
Sumatran island, Indonesia
The Orangutan Project