While birds don't urinate in the same way mammals do, yes, birds do produce pee, although it's very different.
Here's a breakdown:
- No Bladder: Birds lack a urinary bladder, which is where mammals store urine before excretion.
- Cloaca: Instead of a separate urethra, birds have a cloaca, a single opening for the digestive, urinary, and reproductive tracts.
- Uric Acid: Birds excrete nitrogenous waste as uric acid, a white, pasty substance, rather than urea (the primary component of mammalian urine).
- Mixed Waste: The uric acid mixes with feces in the cloaca before being expelled. This is why bird droppings typically appear as a white, semi-solid material with darker fecal matter.
- Water Conservation: Excreting uric acid allows birds to conserve water, as it's less toxic than urea and requires less water to eliminate.
In essence, the "pee" and "poop" are combined, making it seem like birds don't urinate. However, they are excreting the equivalent of urine in the form of uric acid.