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Orangutan researcher Birutė Galdikas presenting her book about the apes. Orangutans were known to the native people of Sumatra and Borneo for millennia. The apes are known as maias in Sarawak and mawas in other parts of Borneo and in Sumatra. [13] While some communities hunted them for food and decoration, others placed taboos on such practices.
An orangutan will break off a tree branch that is about a foot long, snap off the twigs and fray one end with its teeth. [10] The orangutan will use the stick to dig in tree holes for termites. They will also use the stick to poke a bee's nest wall, move it around and catch the honey. In addition, orangutans use tools to eat fruit. [11]
An orangutan peeling a banana with its hand and foot. The Bornean orangutan diet is composed of over 400 types of food, including wild figs, durians (Durio zibethinus and D. graveolens), [29] leaves, seeds, bird eggs, flowers, sap, vines, [30] honey, fungi, spider webs, [30] insects, and, to a lesser extent than the Sumatran orangutan, bark.
Orangutans are arboreal, meaning they primarily live in the trees. There are three sub-species of orangutans, including the Bornean orangutan, the Sumatran orangutan, and the Tapanuli orangutan ...
Human activity is a big part of the problem when it comes to threats to the Sumatran orangutan. Some threats can be reversed with the enforcement of current laws and habitat conservation efforts.
Some arboreal animals need to be able to move from tree to tree in order to find food and shelter. To be able to get from tree to tree, animals have evolved various adaptations. In some areas trees are close together and can be crossed by simple brachiation. In other areas, trees are not close together and animals need to have specific ...
Orangutans and gibbons are tailless apes that still live in trees. But Potts notes that they move very differently than monkeys, who scamper along the tops of branches, using their tails for balance.
In lesser apes, these characteristics were adaptations for brachiation. Although great apes do not normally brachiate (with the exception of orangutans), human anatomy suggests that brachiation may be an exaptation to bipedalism, and healthy modern humans are still capable of brachiating. [4]