H********g
发帖数: 43926 | 1 Aside from helping you decide where not to park next time, this messy event
raises a scientific question: Why is most of the bird poop we see white? The
answer lies in the fact that birds, unlike mammals, don't produce urine.
Instead they excrete nitrogenous wastes in the form of uric acid, which
emerges as a white paste. | n****4
发帖数: 12553 | | f***n
发帖数: 4682 | 3 不是跟老鼠屎一样，黑色的？
【在 n****4 的大作中提到】
: 考你们，蝙蝠的粪是啥颜色
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