I was admiring the site of a beautiful seagull flying peacefully through downtown, when it suddenly dropped some poop in mid-flight. I watched the white poop fall from the bird to the ground. Then I got to thinking, why is bird poop white? A quick web search led me to Yahoo Answers. It turns out that birds don’t urinate. They have one multipurpose hole for pee, poo, sex, and birth. Here’s the detailed explanation.