Besides their homeland being destroyed, the Australia's Borneo Orangutan Survival Foundation said orangutans face dangers from hunters who capture babies to sell as pets. Hunters kill the mothers before taking the young.

Orphaned orangutans are paired with other orphans at the foundation, where they are taught to climb, feed and socialize.

The BBC said it will air a series on the foundation and the foundation's orangutan-saving efforts. In the series, the foundation sent two people on missions to rescue captured orangutans.

The BBC's Michaela Strachan visited Borneo for 10 years to record the orangutan's troubles. "For every baby we rescue, there are five who haven't made it," she said. "And for those six babies, there were six mothers who died."