Black Crested Gibbon

The black crested gibbon, scientifically Nomascus concolor, inhabits high-altitude tropical forest, typically between 2,100 and 2,400 meters elevation, across four subspecies populations in southwestern China, northwestern Laos and northern Vietnam. Its body measures 43 to 54 centimeters and it weighs 6.9 to 10 kilograms; males are entirely dark in color while females are golden or buff-toned with variable dark markings and a dark stripe on the head. It was formerly placed in the genus Hylobates before being reclassified into Nomascus. It is classified as Critically Endangered on the IUCN Red List, with an estimated 1,300 to 2,000 individuals remaining in the wild, and is listed on CITES Appendix I.