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The Sumatran orangutan ... which lasts from birth to around 2.5 years of age. The orangutan weighs between 2 and 6 kilograms. ... The average interbirth rates for the ...
They have a low reproductive rate, giving birth only once every 5-10 years, making it difficult to increase their numbers. However, the discovery of a previously unknown orangutan population in ...
Orangutans are viewed as easy targets, according to hunters, because of their typically large size and lack of speed. [15] Sumatran, Tapanuli and Bornean orangutans are killed at a high rate for many reasons, the most common being the trade of meat or because farmers believe they are a threat to their crops. [16]
According to the International Union for the Conservation of Nature, the Sumatran orangutan is on the critically endangered list. This distinction means that the species faces an extremely high ...
A 2017 genome study found that the Bornean and Tapanuli orangutans diverged from Sumatran orangutans about 3.4 mya, and from each other around 2.4 mya. Millions of years ago, orangutans travelled from mainland Asia to Sumatra and then Borneo as the islands were connected by land bridges during the recent glacial periods when sea levels were ...
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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.
For the first time in 15 years, the Philadelphia Zoo welcomed a baby Sumatran orangutan last month. The zoo announced the birth of the critically endangered animal Thursday, calling it a ...