BONO AND KAJAN
MUELLER'S GIBBON - Hylobates muelleri
Bono (b.1984) and Kajan (b.1995) are mother and daughter and came to the Haven from a zoo when Bono's partner died. This is because the zoo needed the space and resources they were using to set up a breeding pair.
Bono is very laid back while cheeky daughter Kajan rules the roost often stealing food off her mother.
Kajans behaviour and dominance over Bono has improved considerably since arriving at the Haven. Kajan is still quite fiesty but not so aggressive.
You will see mother and daughter call a couple of times a day to secure their territory and when they finish run towards each other for a cuddle.
Their favourite treat is grapes.
ABOUT MUELLER'S GIBBONS
This small gibbon is unusual in that it shows no sexual dimorphism, both the male and female look the same and have the same colour fur.
Mueller Gibbons travel through the trees via a swinging motion called brachiation. They are very agile and extend their elongated arms over their heads in order to hook their hands onto the branches.
They have a throat sac located beneath the chin to help enhance their calls. Vocalisations can be heard in the morning when securing their territory and male and female sing duets to reinforce their bond.
Males and females live together in monogamous pairs with their offspring in a close family group. Offspring leave when they are fully mature and go in search of a mate.
Mueller Gibbons are also known as grey gibbons. They have grey or brown fur and a lighter shade of fur surrounding the outline of their face. They have long canine teeth, no tail and the hair on the top of their head is darker than their body hair.
Common Name
Mueller's Gibbon
Latin Name
Hylobates muelleri
Conservation status
Endangered. CITES Appendix I. Protected by local law
Threats
Habitat loss and illegal pet trade are the main threats. Hunting and collection for human consumption is also known to occur
Distribution
Borneo excluding the south west region
Habitat
Tropical evergreen forests of primary, selectively logged and secondary forest types
Body Length
Approx: 45cm
Weight
5kg - 6kg
Wild Diet
Frugivorous but will also eat immature leaves and insects
Breeding
Sexual maturity at 8-9 years. A single offspring is born and they produce every 2-3 years
Behavior
Arboreal. Monogamous. The mated pair and their offspring occupy a defended home range
