Welcome to Perth Zoo

In the distinctive gibbon-song of this species, females sing the lead to advertise their territory for all to hear.

Description: Javan Gibbons have a fluffy appearance because of their very dense and long silvery-grey fur. They have very long forelimbs, long fingers and shorter thumbs which make them great brachiators (use their arms to swing between branches).

Diet: Javan Gibbons are omnivores and eat fruits, some leaves and sometimes nectar and grubs.

In the wild: They live in family groups made up of a male and female and up to three juvenile offspring. Like other gibbons the territory is maintained by patrols, physical conflict and loud calling.

Threats: An estimated 98% of the Javan Gibbons’ original habitat has been destroyed on the island of Java. They now live in 21 unconnected forest patches and the wild population is estimated to be less than 4,000 individuals. Active conservation management of the populations is essential for their long term survival.

Saving Wildlife Together: With your help, we can work to protect this endangered species. Fighting the illegal wildlife trade is essential to their survival.

Find out how you can help.

Conservation at Perth Zoo: Perth Zoo is one of only six institutions in the world successfully breeding Javan Gibbons. The Zoo also works closely with the Silvery Gibbon Project in its efforts to protect this species in the wild. To find out more about the Silvery Gibbon Project, visit www.silvery.org.au.

Did you Know?

Unlike other gibbon species, the Javan Gibbon does not sing ‘duets’. The female is the dominant vocalist while the male sings only occasionally.

Other Animals
Other Name/s
Silvery Gibbon
Scientific Name
Hylobates moloch
Conservation Status
Body Length
45–64 cm
5–9 kg
210 days
Number of Young

Where you can find me

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