ICONPHOTO

The Park hosts what is thought to be the largest population of the endangered northern yellow-cheeked gibbon and has one habituated group that is the subject of regular study and tourists visits - Group A. Attempts to habituate a second group have so far largely failed, but continue. Group A comprises an adult female, two adult males and two infants: one male and one of unknown sex. All gibbons start life black with white face markings and when sexual maturity is reached the females turn a golden yellow. Although not a given, most gibbon groups in the Park call or "sing" around sunrise and this provides a means of locating them in the forest. Their incredibly long and powerful arms and hands provide the perfect means to effortlessly swing - at great speed - through the forest canopy. Although occasionally coming down low in trees for food, gibbons never touch the forest floor.