Do birds pee? | live science

A common kingfisher (Alcedo atthis) ejects waste. (Image credit: Yaorusheng via Getty Images)

Dogs raise their legs. Cats use a litter box. And birds do their business almost everywhere. But is that whitish stain just bird droppings? What about bird urine?

“Your piss doesn’t look like ours,” she said Susan Reddy (opens in new tab), Associate Professor of Ornithology at the University of Minnesota. “It’s not liquid.” Instead, birds drop a white paste containing both urine and feces.

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