I have 4 ducks right now. They have a little pen on the side of my house, a creek and a few kiddie pools. They eat egg-layer pellets and varied greens everyday. During the winter, I put hay down and cover their pen with a tarp..it stays pretty toasty in there even when its below freezing (this will have to vary depending on what species you have). They seem pretty happy and lay eggs for most of the year.