How do birds have sex

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Spring is the breeding season for most birds, but how do birds mate? Coming together in sexual copulation is essential to fertilize eggs to raise young birds, but the sex act is only a brief part of the courtship and pair bonds between birds. Most birds do not have the same reproductive body parts as mammals. Instead, both male and female birds have a cloaca. This opening also called the vent serves as the bodily exit for their digestive, urinary, and reproductive systems. This means the same opening that excretes feces and urine is the opening from which eggs are laid.
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Do hummingbirds have sex in midair?

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Biologists Still No Closer To Discovering How Birds Have Sex

When birds are ready to mate, both males and females look for the best possible partners. After finding a suitable mate, the sex act is surprisingly quick. This same opening also serves to other purposes: the expulsion of urinary and digestive waste. During breeding seasons, the cloacal openings of both male and female birds become swollen, reaching its peak size, protruding slightly outside their bodies. Arching back, the male usually rubs his cloaca against that of the female.
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Animals Besides Humans that Mate for Pleasure

For many years, the evolutionary biologist at the University of Liverpool in England has been investigating the minutiae of fruit fly sex lives. There are plenty of anecdotes of captive birds getting it on solo, but Price is wondering whether wild birds also partake in the behavior. Price aims to identify which species of birds masturbate in the wild, along with some clues as to why they do it. Lekking birds—like Greater Sage-grouse, which perform their courtship behaviors en masse—are a good bet, he says. One of the PhD students here at the University of Liverpool, Chloe Heys, is a bit obsessed with parrots and fancy chickens.
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If an animal must mate to reproduce, the entire future of its species depends on having sex. The most obviously beneficial adaptation for such a species is, therefore, pleasurable sex. While it's difficult to ask them if they enjoy doing the deed, a quick look at their behavior shows that, at the very least, most mammals and birds experience sexual pleasure.
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