<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How do birds actually pee?
<|assistant|>
Birds pee by squirting urine through their urethra, just like mammals. However, unlike mammals, some birds (such as finches, parrots and doves) have a two-hole drinking and peeing system, where their urine exits through one hole and their food enters through the other. This lets them keep their beaks clean while they eat and drink. Other birds, such as ducks, geese, and penguins have a specialization of cloaca for urination as well as defecation and reproduction. In this case, urine flows out of the body through this single opening. Additionally, male pigeons have a tubular structure, the urophyle, which allows them to pee even while they are flying.