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You are here: Home / Orangutan Facts / Behaviour

Behaviour

Orangutans live mainly in trees, use tools, teach each other skills, live in semi-solitary conditions, employ mating strategies based on the male phenotype (i.e. dominant flanged male versus non-flanged male), recognize not only themselves but over 200 varieties of fruits.

More: Read more about orangutan intelligence here.

A long-call is when a dominant flanged male emits calls to alert sexually available females of his presence.

The dominant flanged male orangutan, communicates his presence with the long-call. The long-call is a series of long booming pulses and grumbles, which can be heard through dense jungle as far away as 1 kilometer. Flanged males that are emitting long-calls can be identified, and the context of their call can be interpreted by females, as well as other males. The caller is communicating his presence and depending on his purpose will employ specific behaviours. For example, a dominant flanged male that detects another male nearby may give a series of fast, excited calls of short length, with pulses and bubbles. These calls are often associated with snag crashing (i.e. pushing down dead trees).

Another example of a long-call is when a dominant flanged male emits calls to alert sexually available females of his presence. His calls are of a longer duration than that of his confrontational calls with other males. At this time the dominant flanged male does not snag crash, but calmly sits down on the ground in a rather conspicuous location. Bornean females can identify who is making the long-call, as well as understand his intentions. Mature females that are not with dependent young will move towards the dominant male for mating purposes.

baby orangutan looks around tree Female orangutans rear their young for 8 years. This is the longest rearing time of any primate, other than humans. Females teach their offspring how to nest build, how to swing between trees, what plants to eat, how to find insects, how to collect honey, and how to chew plants if water is not available.

More: Read more about the orangutan’s diet here.

In 2003, researchers coded orangutan behaviours from different sites and found that there were differences in behaviours between groups. The greater the distances between groups, the greater the differences in behaviours. Researchers believe that this is due to cultural diffusion and that the greater the number of social contacts, the greater the opportunity to learn from each other. Social contact facilitates culture.

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Orangutan Foundation International Canada's mission is to support the conservation, protection and understanding of orangutans and their habitat in the tropical rainforest, and to care for Orangutans orphans who have experienced captivity, for their return to the forest.

About OFICanada

Orangutan Foundation International Canada is a registered Canadian charity founded in 2011. It is based in Vancouver, British Columbia, and was founded by a small group of Canadians who are passionate about orangutans and forests. Our CRA Charitable Registration Number: 80567 3209 RR0001

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