Why You Never See a Bird ‘Lifting It’s Leg’ to Pee
Which, co-incidentally is the reason why Bird Poop turns White. Put it another way, we have all seen birds poop, but no-one has seen a bird pee. Birds do pee but not the way mammals do. When mammals urinate, we expel nitrogen-rich waste like urea. Birds don’t do that, though, so the nitrogenic waste has …