Description Nomascus gabriellae, Edinburgh Zoo.
English: Adult Pair of the Yellow-cheeked Crested Gibbon, also called Golden-cheeked Crested Gibbon or Buffed-cheeked gibbon in Edinburgh Zoo. Left the male, right the female. Source: Own work -> http://www.zoologie.de/grzimek/bild-gelbwangen-schopfgibbon-614.html
Date 16 July 2007 (original upload date)
Author Sancassania at English Wikipedia https://en.wikipedia.org/wiki/User:Sancassania
Source: https://commons.wikimedia.org/wiki/File:Nomascus-gabriellae.jpg

The yellow-cheeked gibbon (Nomascus gabriellae), also called the golden-cheeked gibbon, yellow-cheeked crested gibbon, the golden-cheeked crested gibbon, red-cheeked gibbon, or the buffed-cheeked gibbon, is a species of gibbon native to Vietnam, Laos, and Cambodia. The yellow-cheeked gibbon is born blond and later turns black. Males carry this colouring through their lifespan and have the distinguishing golden cheeks. Females are born blonde to blend into their mother's fur but they later turn black. Females turn back to blond at sexual maturity, keeping only a black cap on the top of their heads. Order: Primates, Superfamily: Hominoidea, Family: Hylobatidae. (Invalid) Synonym: Hylobates gabriellae Thomas, 1909.