I've been wondering the same thing, not so much worrying about the pool because ducks don't necessarily NEED the pool the of water, but I imagine I'm going to have the same issues with drinking water as I do the chickens. Mine have become a lot less messy since I've been letting them free range. I keep their water outside of their coop. They don't need it at night when they should be sleeping anyway. And they're let out early in the morning so they get right to it then along with their food. If for some reason I think I'll be late to letting the out in the morning then I'll put it back in the coop. But I think they are fine from 9pm to 7am without it.What do you do in the winter for the ducks? I know you always put the water outside, but how do you keep it from freezing faster than they can do their daily dunking? I'vethought about ducks, but when I think of the wet mess, I stop thinking...