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The Sumatran orangutan (Pongo abelii) is one of the three species of orangutans. Critically endangered , and found only in the north of the Indonesian island of Sumatra , it is rarer than the Bornean orangutan but more common than the recently identified Tapanuli orangutan , also found in Sumatra.
Sumatran orangutans are frugivores, or animals that feed on fruit. They are responsible for spreading seeds over their native area, and losing them means many tree species could also disappear.
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 ...
The number of Bornean orangutans has decreased by more than 60% in 60 years, and the population of the Sumatran orangutan has decreased by 80% in the last 75 years. [2] It is estimated that between 1999 and 2015, the population of Bornean orangutans has decreased by over 100,000. [2]
Orangutans are arboreal, meaning they primarily live in the trees. There ... There are three sub-species of orangutans, including the Bornean orangutan, the Sumatran orangutan, and the Tapanuli ...
In June 2022, a male Sumatran orangutan named Rakus sustained a facial wound below the right eye, apparently during a fight with another male orangutan at the Suaq Balimbing research site, a ...
Young orangutan in the national park Mount Leuser Forest. Gunung Leuser National Park is one of the two remaining habitats for Sumatran orangutans (Pongo abelii). [3] In 1971, Herman Rijksen established the Ketambe Research Station, a specially designated research area for the orangutan. [4]
Rakus, a male Sumatran orangutan, treated a wound on his face by chewing leaves from a climbing plant named Akar Kuning and repeatedly applying the juice to it, according to a paper published in ...