Symphalangus – Siamang
The largest gibbon
Siamang gibbons are well known for their graceful movement from tree to tree and impressive emotive calls. They have long, shaggy black fur on their whole body except for a gray area around their chin and mouth. The adults groom for about 15 minutes a day, and the more dominant individual receives more grooming than it provides.
The primary threats to them are the loss and fragmentation of forest habitats. Road development, logging, and conversion to agriculture are destroying their habitat. Infants are also often hunted for the illegal pet trade, and poachers will kill the mother first because females are very protective of their infants.
Species in this genus
Defend their territory with a singing ritual that starts at about 9 am each day and lasts for an hour