gibbon

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gibbon,

small apeape,
any primate of the superfamily Hominoidea, which includes humans; this article, however, focuses on the nonhuman apes. The small apes, the gibbon and the siamang, and the orangutan, one of the great apes, are found in SE Asia.
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, family Hylobatidae, found in the forests of SE Asia. The gibbons are known as the small, or lesser, apes; they are the most highly adapted of the apes to arboreal life. They are highly endangered because of habitat destruction.

Most gibbons are about 3 ft (90 cm) tall and weigh about 15 lb (6.4 kg). Their arms are extremely long in proportion to their body length, and they swing through the trees with great speed and agility, clearing gaps up to 20 ft (6 m) wide. On the ground they walk on two feet, holding their arms up awkwardly; they can also run on all fours.

Members of most gibbon species have black faces surrounded by a white ruff; their fur ranges in color from black to buff. Some species, e.g., the lar, or white-handed, gibbon, have sexual dimorphism in coloration. Like Old World monkeys and unlike other apes, gibbons have callosities on their buttocks.

Gibbons live in permanent families consisting of a male, a female, and their young; families occupy definite territories. They feed on fruits and other plant matter as well as insects and other small animals. Gibbons have powerful voices and at times engage in loud howling, which is answered by other gibbons in the vicinity.

The largest gibbon is the siamang, Symphalangus syndactylus. Deep black, with a reddish brown face, the siamang may weigh up to 25 lb (11.3 kg). Siamangs are further distinguished by the presence in both sexes of a large vocal sac on the throat; this sac is inflated before the animal howls and probably functions to magnify the sound. Such a sac is also found in the male black crested gibbon (Nomascus concolor). Siamangs are found in the high mountain forests of Sumatra and the Malay Peninsula.

Gibbons are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Primates, family Hylobatidae.

gibbon

[′gib·ən]
(vertebrate zoology)
The common name for seven species of large, tailless primates belonging to the genus Hylobates ; the face and ears are hairless, and the arms are longer than the legs.

gibbon

any small agile arboreal anthropoid ape of the genus Hylobates, inhabiting forests in S Asia

Gibbon

1. Edward. 1737--94, English historian; author of The History of the Decline and Fall of the Roman Empire (1776--88), controversial in its historical criticism of Christianity
2. Lewis Grassic , real name James Leslie Mitchell. 1901--35, Scottish writer: best known for his trilogy of novels Scots Quair (1932--34)
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And Burns, Sir Walter Scott, Hugh MacDiarmid, Lewis Grassic Gibbon, James Kelman, Jeff Torrington and Irvine Welsh would all be in anybody's top 10.
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1992) - Jeff Torrington Sunset Song (1932) - Lewis Grassic Gibbon The Thirty-Nine Steps (1922) - John Buchan To the Lighthouse (1927) - Virginia Woolf Trainspotting (1993) - Irvine Welsh The Trick is to Keep Breathing (1989) - Janice Galloway Trumpet (1998) - Jackie Kay A Twelvemonth and a Day (1985) - Christopher Rush Tunes of Glory (1956) - James Kennaway Under the Skin (2000) - Michel Faber A Voyage to Arcturus (1920) - David Lindsay The Wasp Factory (1984) - Iain Banks The Wealth of Nations (1776) - Adam Smith Whisky Galore (1947) - Compton Mackenzie The White Bird Passes (1958) - Jessie Kesson The Wind in the Willows (1908) - Kenneth Grahame Young Adam (1954) - Alexander Trocchi
Why aren't there any monkeys at the Lewis Grassic Gibbon Centre?