In bird anatomy, the common chamber of the digestive, urinary, and reproductive systems; also called the cloaca in birds and many other animals.
From Greek ko- (together) + prōkt- (anus) + daiein (divide), literally 'shared opening,' describing the unified chamber at the end of these systems.
Birds, reptiles, and amphibians all have this one opening for pee, poop, and reproduction (the cloaca)—it's weirdly efficient, which is probably why evolution kept it, even though it seems gross to us.
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