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Bornean orangutans (Pongo pygmaeus) exhibited aggression in almost 90 percent of their copulations, including when the females were not resisting. [13] A possible explanation for aggressive behaviors in primates is that it is a way for males to train females to be afraid of them and be more likely to surrender to future sexual advances. [1]
Orangutans are great apes native to the ... which take up 25% of their average foraging time. ... Little was known about orangutan behaviour until the field studies ...
Of the subjects, 100 were Sumatran (Pongo abelii), 54 Bornean (Pongo pygmaeus) and 30 were hybrid orangutans. 113 zoo employees, who were highly familiar with the typical behavior of the orangutans, used a four-item questionnaire to assess their subjective well-being. The results indicated that orangutans in higher subjective well-being were ...
However, the discovery of a previously unknown orangutan population in Malaysian Borneo is reason to hope. Threats. Human actions have reduced orangutan habitats by more than 80% over the past 20 ...
When a critically endangered orangutan was pregnant, the Dublin Zoo hatched a plan to teach her the maternal skills she'd need to care for her newborn. Skip to main content. 24/7 ...
The orangutan's intriguing behavior was recorded in 2022 by Ulil Azhari, a co-author and field researcher at the Suaq Project in Medan, Indonesia. Photographs show the animal’s wound closed ...
Orangutan nest. Orangutans build day and night nests. Young orangutans learn by observing their mothers' nest-building behaviour. Nest-building is a leading reason for young orangutans to leave their mother for the first time. Starting at 6 months of age, orangutans practice nest building and gain proficiency by the time they are 3 years old. [1]
Bonnie (born 1976, in Rio Grande Zoo) is a hybrid female Sumatran/Bornean orangutan living at the National Zoo in Washington, D.C., since 1980. [1] She began spontaneously whistling, mimicking an animal caretaker making the sound. This is significant as whistling is a sound that is in a human's—but not an orangutan's—repertoire.