Question 1 Report
The nitrogenous substance that is excreted by birds in order to conserve water is
Birds excrete a nitrogenous substance that is different from mammals because they conserve water by producing a solid, pasty material that contains very little water. This substance is called uric acid. Uric acid is a nitrogenous waste product that is produced by the liver, released into the bloodstream, and then excreted by the kidneys into the cloaca, which is the common exit point for the urinary, digestive, and reproductive systems in birds. Unlike mammals, birds do not convert ammonia to urea, which requires more water to excrete. Instead, birds convert ammonia directly to uric acid, which is less toxic and requires very little water to excrete. This allows birds to conserve water in their bodies, which is important for their survival in dry environments.