The Siamang (Symphalangus syndactylus) communicates with each other in a voice. Uniquely, they have a bag in the throat that can swell when the gibbon makes a sound. With the help of this bag, the gibbon sound can be heard up to 5 km.
Habitat, Distribution, and Conservation. Siamang (Symphalangus syndactylus) lives on the island of Sumatra Indonesia, Peninsular Malaysia, and Thailand. These long-armed primates inhabit tropical forest habitats. Primate species are often found in areas at altitudes above 300 meters above sea level, although not infrequently dijuampai also in the lowlands.
Several suspected quake populations include the Bukit Barisan National Park, Gunung Leuser National Park, Way Kambas National Park, R Langkat Barat (Indonesia); Fraser Hill R, Gunong Besout Forest Reserve, Krau Wildlife Reserve, Ulu Gombak Wildlife Reserve (Malaysia); Wildlife Sanctuary Hala Bala (Thailand).
The main threat of the gibbon population is deforestation either by forest encroachment or by forest fires. The second threat is the illegal hunting and trade of animals carried out by humans. Precisely the threat of population due to natural predators is very small.
Due to deforestation and hunting, gibbons become one of the world's rare animals. By IUCN Redlist, primates named latin Symphalangus syndactylus is categorized in "endangered" conservation status since 2008. CITES also incorporated these rare apes in the Appendix I list. This means that these long-sleeved black primates should not be traded.
With his long arms, the gibbon became a very agile ape on a tree. This makes each predator difficult if you want to catch a gibbon (Symphalangus syndactylus). Unfortunately, the Black Ape's aptitude did not prevent him from the threat of extinction due to human hunting and deforestation.
