Video Clips:
Crested gibbon hybrids
Nomascus hybrids

Clips 1-28: The two adult males in this group are brothers and both are Nomascus gabriellae x N. leucogenys siki, whereas the adult female is N. leucogenys leucogenys x N. leucogenys siki. The infant is three weeks old.

Clip 29: The adult pair (male only seen in the background) are both believed to be Nomascus leucogenys siki x N. gabriellae.

Click on a button to run the corresponding video clip.

Click Button	Behaviour	Description	Locality, Date	Author
	Bipedal run	The adult male picks up a food item from the ground and carries it across the island, running bipedally.	La Flèche, France,, 30 June 1993	Thomas Geissmann
	Bipedal run	The adult male runs across the island, partly in a sideways fashion	La Flèche, France, 30 June 1993	Thomas Geissmann
	Crutching walk	The adult female has a crippled right foot. When walking on the ground, she is not able to walk bipeally. Instead, she has developped a quadrupedal crutching walk which is only rarely seen in other gibbons.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Crutching walk	The adult female's crutching walk	La Flèche, France, 30 June 1993	Thomas Geissmann
	Crutching walk	The adult female's crutching walk	La Flèche, France, 30 June 1993	Thomas Geissmann
	Crutching walk	The adult female's crutching walk	La Flèche, France, 30 June 1993	Thomas Geissmann
	Pirouette	When running bipedally, the adult male often exhibits an apparently playful pirouette.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Pirouette	Another pirouette by the adult male.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Body shake	The adult male shakes his body, a typical comfort behaviour in gibbons.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Scratch	The adult male, then the adult female, scratch various parts of their bodies.	La Flèche, France	Thomas Geissmann
	Scratch	The adult male and the adult female scratch their bodies.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Observe	The adult male intensely observes a particular area outside of the gibbon island.	La Flèche, France	Thomas Geissmann
	Drink	The adult male drinks by directly licking the water from a dish. Many other gibbons drink by inserting their hands in the water and licking the water drops from the wrist fur.	La Flèche, France	Thomas Geissmann
	Insect scan	The adult male developed an interesting technique for catching insects from the lawn: He slides his forêarm across the ground and then scans it for any insects that might hang to the fur.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Bread dunking	When fed old bread, the adult male throws it into the pond and lets it soak a while before fishing it out and taking a bite.	La Flèche, France, 1 July 1993	Thomas Geissmann
	Kick	The adult male approaches his brother, looks at him, quickly kicks him and runs away. This probably is an invitation to play.	La Flèche, France	Thomas Geissmann
	Play-chase	The adult males take turns at play-chasing each other.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Play-chase	The adult males take turns at play-chasing each other.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Grooming	Both adult males groom the adult female.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Grooming	The adult males grooms the infant.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Licking	The adult males grooms and licks the infant's back.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Suckling	The infant suckles at mother's breast.	La Flèche, France	Thomas Geissmann
	Face-lick	The mother gives her infant a brief lick to the face.	La Flèche, France	Thomas Geissmann
	Inspection	The mother holds up her infant and inspects, licks and grooms various parts of its body. The adult male occasionally grooms the infant as well.	La Flèche, France, 1 July 1993	Thomas Geissmann
	Great call sequence	The female interrupts the male's multi-modulated phrase with a great call. She moves during the climax of her phrase. The male replies with another multi-modulated phrase and turns around to send his call into all directions.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Great call sequence	The female interrupts the male's multi-modulated phrase with a great call. She moves around during the climax of her phrase. The male replies with another multi-modulated phrase.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Great call sequence	The female interrupts the male's multi-modulated phrase with a great call. She moves around during the climax of her phrase. The male replies with another multi-modulated phrase.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Great call sequence	The female interrupts the male's multi-modulated phrase with a great call. She moves around during the climax of her phrase. The male replies with another multi-modulated phrase.	La Flèche, France, 30 June 1993	Thomas Geissmann
	Crutching walk	The female "Chimène" exhibits a quadrupedal crutching walk.	Paris Vincennes, France, 26 June 1993	Thomas Geissmann