Description: Golden-headed Langur, Trachypithecus poliocephalus, Vietnam, Indo-Burma  hotspot, Golden-headed langur numbers on Cat Ba Island have dropped precipitously from more than 100 to an estimated 60 in just one year.  Protection from poaching remains problematic.
Credit: Russell A. Mittermeier
Copyright: Russell A. Mittermeier

Source:  Conservation International