However, females frequently copulate with males other than their social mate and often lay clutches of mixed paternity.
During this the female will have copulated with multiple males, who will have fought to mount her from below.
About 50 percent of the time, females who had been exposed to glossy black forelegs copulated with males with the same.
One female observed by the primatologist Jane Goodall copulated with seven males 84 times in eight days.
A study found that females copulate more with stained-chested than with clean-chested males.
Once a female has copulated with a male, she does not allow other males to approach, kicking them away with her hind legs.
The females join them and copulate in the water.
Sexual harassment may be avoided if females give in to males and copulate when they please.
The females copulate with various males and each copulation a small clump of about 20 to 50 eggs are laid.
An observation of banded birds noted that while females copulated repeatedly, it was always with the same male.