Birds excrete nitrogenous wastes in form of

Mickey2.0

5 years ago

Birds excrete uric acid because they can't afford to lose water, and water is what dilutes uric acid to form urea.

peter samson

9 years ago

never...its AMMONIA..

mhanioc

9 years ago

•Nitrogenous wastes in the body tend to form toxic ammonia, which must be excreted.

•Mammals such as humans excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste.

Birds and reptiles have evolved the ability to convert toxic ammonia into uric acid or guanine rather than urea.