Keo Seima Wildlife Sanctuary is located in Mondulkiri province, in the eastern plains. With Bamboo forest, dry dipterocarp forest, evergreen and semi-evergreen forest, this protected area is one of the most important reserves for wild birds and mammals. It is home to several species of apes and monkeys, such as the Black-shanked Douc, the Pig-tailed and Long-tailed Macaque, and the Yellow-cheeked Crested Gibbon. And it is also a land of woodpeckers, which include: the Grey Slaty Woodpecker (the world’s largest woodpecker), the White-bellied, Laced, Heart-spotted and Black-and-buff Woodpeckers. Also found here are: Golden-crested Myna, Red-vented Barbet, Pin-tailed Green-pigeon and Hornbills.