Click on a button to run the corresponding video clip.
| Click Button | Behaviour | Description | Locality, Date | Author |
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Slow brachiation | The adult female slowly brachiates across the cage. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Display | The adult female rattles at the wire-mes of her cage and jumps against a wooden board. This display is directed at the hoolock in the adjacent cage. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Display | The adult male jumps into the wire-mesh and rattles it. This display is directed at the hoolock in the adjacent cage. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Duet song: Introductory sequence | A short section of the introductory sequence of the duet song bout. At this stage of the song bout, mostly wao notes are produced. Two hoolocks in the indoor cage can be heard calling in the background (same note type). Their calls triggered this song bout. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Duet song: Introductory sequence | Another short section of the introductory sequence of the same duet song bout. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Duet song excerpt | Another section of the same duet song bout. Here, great call sequences can also be heard, but this song bout is not structured very rigidly. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Duet song excerpt | Another section of the same duet song bout, similar to the previous one. | Beijing Zoo, China, 10 August 2002 | Thomas Geissmann |
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Drink | Male infant drinking from a water bowl in typical gibbon fashion: the gibbon dips the hand in the water and then licks the water from the fur on his hand and wrist. | Kunming Institute of Zoology, Yunnan, China, 4 August 1990 | Thomas Geissmann |
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Invitation to play | One juvenile female bites another juvenile female softly into the hand, then hugs her briefly. | Kunming Institute of Zoology, Yunnan, China, 4 August 1990 | Thomas Geissmann |
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Autogrooming | Juvenile female cleans a spot on her forearm by licking an biting it. | Kunming Institute of Zoology, Yunnan, China, 4 August 1990 | Thomas Geissmann |
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Scratching | The subadult female "Shuai-Shuai" scratches and inspects her leg. | Kunming Zoo, Yunnan, China, 18 August 1990 | Thomas Geissmann |
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Body-shake | The juvenile male "Sa-Sa" shakes its body, a typical comfort behaviour in gibbons. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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Display | The juvenile male "Sa-Sa" jumps into the wire-mesh. This display is directed at the hoolock pair in the adjacent cage. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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Mouth-champing | The juvenile male "Man-Man" repeatedly opens his mouth, with lips covering teeth. The gibbon appears to be disturbed by the observer. Mouth.champing is a sign of nervousness and, possibly, also an agonistic display. | Kunming Zoo, Yunnan, China, 18 August 1990 | Thomas Geissmann |
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Slow brachiation | The juvenile male "Man-Man" slowly brachiates across his cage. | Kunming Zoo, Yunnan, China, 18 August 1990 | Thomas Geissmann |
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Slow brachiation | The adult female "Pan-Pan" slowly brachiates across her cage. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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Yawn | Adult female "Gui-Gui" yawns. | Kunming Zoo, Yunnan, China, 5 August 1990 | Thomas Geissmann |
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Allogrooming | Adult female "Gui-Gui" briefly grooms the juvenile male "Lai-Lai". | Kunming Zoo, Yunnan, China, 5 August 1990 | Thomas Geissmann |
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Duet song excerpt | A short section of the duet song of the adult female "Gui-Gui" and the juvenile male "Lai-Lai". The female starts with a low-pitched growl followed by an oo-note, then launches a great call. A neighbouring pair of hoolocks also joins in. The great call sequence ends with several deep growls by the female. | Kunming Zoo, Yunnan, China, 12 August 1990 | Thomas Geissmann |
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Duet song excerpt | Another section of the duet song of the adult female "Gui-Gui" and the juvenile male "Lai-Lai". The female starts with a biphasic ow-wa note, followed by several biphasic wa-oo notes and two high eeks, before starting her great call. Again, the neighbouring pair joins in. The great call sequence ends with several deep growls by the female. | Kunming Zoo, Yunnan, China, 12 August 1990 | Thomas Geissmann |
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Duet song excerpt | Another section of the duet song of the adult female "Gui-Gui" and the juvenile male "Lai-Lai". The sequence starts with several ows, followed by ow-was and wa-oos, growls and eeks. This time, the female takes longer to start the great call, and the great call is much shorter. | Kunming Zoo, Yunnan, China, 12 August 1990 | Thomas Geissmann |
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Oo-notes and growls | The adult female "Pan-Pan" responds to the caretaker's calls by uttering biphasic calls consisting of oo-notes and deep growls. At the end of the sequence, another gibbon responds likewise (probably the juvenile male "Sa-Sa" in the same cage). | Kunming Zoo, Yunnan, China, 12 August 1990 | Thomas Geissmann |
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Duet song excerpt | A short section of the duet song of the adult female "Pan-Pan" and the juvenile male "Sa-Sa". The sequence starts with several soft oo-notes and growls, before the female start her great call. The neighbouring pair joins in. The great call sequence ends with oo-notes and growls by the female and a few biphasic wa-oo notes by the juvenile male. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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Duet song excerpt | A short section of the duet song of the adult female "Pan-Pan" and the juvenile male "Sa-Sa". No clear great call can be recognised in this clip. The neighbouring pair and other hoolocks sing at the same time. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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Duet song excerpt | A short section of the duet song of the adult female "Pan-Pan" and the juvenile male "Sa-Sa". No clear great call can be recognised in this clip. The male produces two prominent eeks in the middle of this clip. The neighbouring pair and other hoolocks sing at the same time. | Kunming Zoo, Yunnan, China, 13 August 1990 | Thomas Geissmann |
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