Black-Handed Gibbon, Indonesian BorneoThis black-handed gibbon, also known as the agile gibbon, was living amongst the orangutans in Tanjung Puting National Park in Indonesian Borneo. Unfortunately, these apes are listed as endangered due to loss of their forest habitat and the pet trade. Nikon D300 with Nikkor 200-400mm lens (at 250mm) ISO 800, f/4 at 1/250th of a second.