Why don't birds poop in water?

Who says birds don't poop in water! Seagulls do! I know ... got sprayed by one last summer. Yuk! Birds as a whole can and do poop in water if they happen to need to go when they are near water. But, pet parrots (whether near your pool or not)a parrot will tend to avoid pooping where they sleep and where they eat if they are provided with sufficient space to be able to easily avoid having to do so.