The large and entirely black siamang is found alongside white- and dark-handed gibbons on the Malay Peninsula and Sumatra.
The siamangs of Indonesia are found in the Barisan Mountains in the west-central parts of Sumatra. Capture to be sold as pets is also a significant problem, and the siamang is one of the gibbon species most under threat in this illegal trade, where typically the mother is shot to procure her young for sale. It generally takes siamangs around five hours to eat enough to be satisfied. Siamang, (Symphalangus syndactylus), arboreal ape of the gibbon family (Hylobatidae), found in the forests of Sumatra and Malaya. Until 2005 the siamang was classified with other gibbons in the genus Hylobates as H. syndactylus. They can be heard through the forest up to 3.2 km distant. Grooming is one of the siamangs' most important social activities. An adult male will groom a female and males which are sub-adult. 4 genera, 7 African and Eurasian species until human expansion since the Late Pleistocene.…, …is an adaptation seen in gibbons. The separation of the gibbons (Hylobatidae) from the great ape/human stock (Hominidae) is at present not documented by fossils; indeed,... Get exclusive access to content from our 1768 First Edition with your subscription.
Older siblings will also help with rearing younger siblings. BH206HH. These typically consist of a dominant male and female and their offspring. Gibbon species include the siamang, the white-handed or lar gibbon, and the hoolock gibbons Etymology. Siamang Gibbon on The IUCN Red List site -, http://www.iucnredlist.org/details/39779/0. Active Wild Pinterest Active Wild Facebook. ), The siamang has long, slender arms, and, like all apes, lacks a tail. Symphalangus syndactylus. Let us know if you have suggestions to improve this article (requires login). ActiveWild.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon stores. 1 fossil of a different genus dating from the Pleistocene. Siamang Gibbons Scientific Name. The siamang is the only species in the genus Symphalangus, whose name is derived from the Greek words for together (sym) and finger (phalanx). Siamangs eat mainly leaves and fruit, but sometimes they eat insects, small vertebrates and bird eggs. The siamang is also distinguished by the webbing between its second and third toes and by a dilatable hairless air sac in its throat.
It feeds mainly on fruit and has been observed to live alone or in small groups. Omnivore; mostly fruits and leaves but will also consume insects, bird eggs and small invertebrates.
Gibbons are still widely distributed in the rainforests and monsoon forests of Southeast Asia, but they are more and more under threat as their forest habitat is destroyed.
Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Articles from Britannica Encyclopedias for elementary and high school students. Omissions? Omissions? Siamang, (Symphalangus syndactylus), arboreal ape of the gibbon family (Hylobatidae), found in the forests of Sumatra and Malaya. Members of the primate family Hylobatidae are known as gibbons. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Siamang gibbons sleep sitting upright in the fork of a tree, usually alone but sometimes huddled together. Although it doesn't have a tail, the Siamang has an impressive sense of balance, and it is sometimes seen walking along branches on its hind legs, high above the ground, and sometimes it climbs on all fours.
The dark-handed gibbon (H. agilis), which lives on Sumatra south of Lake Toba and on the Malay Peninsula between the Perak and Mudah rivers, may be either tan or black and has white facial markings. Males, females and infants have long, shaggy black coats with pale hairs around the mouth and chin. Corrections? It spends the majority of its time in the mid-upper canopy and retreats to the highest trees to rest and sleep. 4 genera, approximately 20 species.
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