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How do adult male orangutans behave around sexually receptive females?
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orangutan
Female orangutans (Pongo) have the longest breeding interval of any mammal, giving birth on average once every eight years.
When a female orangutan becomes sexually receptive, she may attract multiple males, including both adults and subadults. During this time, adult males exhibit aggressive behavior toward other males, often engaging in combat in the presence of the receptive female.1
Most mating occurs within the context of consortships, which typically last between 3 and 10 days and are correlated with the female's ovulation. While adult males are generally the most solitary of the primates, they will associate with these consorting females.1