
Why is the Orangutan in Danger?
Unfortunately, the species today is found only in limited populations on the islands of Borneo and Sumatra. Due to the destructive activities of humans, the wild population may have diminished in the past decade by as much as 50%. Estimates of the current population are from less than 50,000 to 60,000 with more than three quarters of all orangutans found on Borneo.
Source: http://www.orangutan.org/danger.php