Click on a button to run the corresponding video clip.
| Click Button | Behaviour | Description | Locality, Date | Author |
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Salad feed | Subadult feeding on salad | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Grass feed | Juvenile feeding on grass from the ground | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Grass feed | Several group members feeding on grass from the ground | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Crouching walk | Adult female exhibiting slow crouching walk | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Crouching walk | Adult male exhibiting slow crouching walk | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Slow climb | Juvenile exhibiting slow climb. Siamang calls are audible in the background. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Nervous swing | Adult male nervously swinging back and forth, squeals, does not stop when it suddenly starts to rain heavily. Siamang calls are audible in the background. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Observe | Adult female stares at the observer or at her reflection in the camera lens. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Contourt | Adult male repeatedly and heavily pulls at his own neck and while assuming a contourted position. The function of this behaviour is unclear. When the male receives a play invitation from the juvenile, he reacts with a threat. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Play invitation | The juvenile directs several invitations to play at the subadult. Short bouts of social play ensue. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Groom | Social grooming | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Copulation | Copulation between dark female and light male, in the outdoor cage, while both offspring are in the indoor cage. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Copulation | Copulation between dark female and light male, in the outdoor cage, while both offspring are in the indoor cage. | Twycross Zoo, UK, 22-28 August 2005 | Amandine Chapelain |
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Copulation disturbance | The adult pair briefly plays, then appears to begin to copulate, but they are immediately interrupted by the juvenile who chases the adult male. Calls of a male pileated gibbon and a female lar gibbon are audible in the background. | Twycross Zoo, UK, 25 August 2005 | Amandine Chapelain |
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Play-chase | The juvenile and the subadult take turns at play-chasing each other. Calls of a male pileated gibbon are audible in the background. | Twycross Zoo, UK, 25 August 2005 | Amandine Chapelain |
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Play and gallop | The subadult briefly play-chases the juvenile who runs a way on the ground in a quadrupedal gallop. Rasping calls can be heard during the chase, but it is not clear which animal is calling. | Twycross Zoo, UK, 25 August 2005 | Amandine Chapelain |
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Gallop | The juvenile runs on the ground in a quadrupedal gallop. Calls of a male pileated gibbon are audible in the background. | Twycross Zoo, UK, 25 August 2005 | Amandine Chapelain |
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Male song | A short phrase by the adult male. | Twycross Zoo, UK, 25 August 2005 | Amandine Chapelain |
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Male song | A more elaborate phrase by a different adult male. Siamang and male pileated gibbon calls are audible in the background. | Twycross Zoo, UK, 30 August 2005 | Amandine Chapelain |
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Male song | A longer excerpt of the male solo song. The male also produces squeals between the phrases. Calls of siamangs, a male pileated gibbon and another male agile gibbon are audible in the background. | Twycross Zoo, UK, 30 August 2005 | Amandine Chapelain |
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Male song | A longer excerpt of the male solo song. The male also produces squeals between the phrases. Calls of another male agile gibbon are audible in the background. | Twycross Zoo, UK, 30 August 2005 | Amandine Chapelain |
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Groom | A long excerpt of a grooming session showing several members of a family group groomign the adult male. | Twycross Zoo, UK, 5-11 September 2005 | Amandine Chapelain |
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Groom | A longer take of the adult female grooming the adult male (different group than in the example above). | Twycross Zoo, UK, 5-11 September 2005 | Amandine Chapelain |
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Climb | Juvenile climbing on wire mesh. | Marak Island, Kalaweit Rehabilitation Center Sumatra, 1 June 2005 | Sally Keith |
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