I was walking around my property this morning and saw something I see every morning -- bird crap on the ground under the trees where the birds roost. But then I realized that I did not know why their "stuff" is black and white. So, I looked it up . . .
From britannica.com:
"While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison. Uric acid thus forms a white sticky paste. So the white part is actually bird pee; it is the dark center that is the poop."
From britannica.com:
"While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison. Uric acid thus forms a white sticky paste. So the white part is actually bird pee; it is the dark center that is the poop."
