© Charity Glenn
More images:
Scientific Name:
Symphalangus syndactylus
Other Names and/or Listed subspecies:
Hylobates syndactylus (formerly)
Status/Date Listed as Endangered:
EN-US FWS: June 14, 1976
EN-IUCN: 2008
Area(s) Where Listed As Endangered:
Indonesia, Malaysia

The siamang is a gibbon species found in the upper canopies of forest regions of Malaysia and Indonesia. Adults can weigh up to 45 lbs and grow as high as three feet. Males are larger than females. They have black fur with long and somewhat saggy hair, and there is also a large and inflatable throat sac near the side of the head, called a "gular sac," which is used as a resonator for their vocal cords. The siamang's feet are webbed (between the second and third toes), and it has no tail.

Siamangs prefer social groups consisting of one male, one female and their offspring. Most apes prefer to build sleeping nests or platforms to sleep on, but the siamang sleeps upright with its arms folded and head between its knees. Siamangs prefer to be active and feed during the day. Diet consists of fruits, leaves and plants, and small animals and insects. They are very territorial, and the father and young males work together to defend their territory. The female gives birth to only one young after a gestation period of seven to eight months, and all the males in the group take an active part in caring for the young and have even been seen carrying the young in their arms.

Siamang populations have declined due to habitat loss from the clearing of forests for palm oil production. They are also captured and taken from the wild to be sold as pets.

Wikipedia Article

This article is only an excerpt. If it appears incomplete or if you wish to see article references, visit the rest of its contents here.
Wikipedia Article
Copyright Notice: This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Siamang".

Featured Article

Rare white giraffes sighted for the first time in Kenya
A pair of white giraffes have been discovered in Kenya recently by local residents. According to the residents, the beautiful white giraffes were very close to them, extremely calm, and did not seem disturbed by their presence. The residents immediately tipped off conservationists who then found the giraffes in the Ishaqbini Hirola Conservancy, an already established safe space dedicated to the preservation of antelopes in the area.


Endangered Species of Our Planet

Donate, Adopt, Get Involved

EEC Conservation Directory

Mailing List

Would you like to receive a notice and link when the new Creature Feature is posted?

Enter your e-mail address below:


Fun & Games

Are you inspired by endangered animals? Check out our games and coloring pages! More to come soon.
color endangered creatures
play hangman