Ducks have to have water they can drink from and dip their heads in to clean their nostrils!!! THIS IS A MUST!!! My set up: Due to their water bowl freezing totally solid and having to go out in horrible weather every two hours to break up ice, I opted to use their small pool for a waterer that measures 3'x2' that was semi frozen, even though it is made from rubber. So, I went to Rural King (or any farm & home store, or even Lowes) and picked up a FLOATING DE-ICER. I filled the pool, put the de-icer in it and have never had frozen water, or even any ice since then, even with temps in the low teens. It turns itself on at 35 degrees. This simple and easy to drop in de-icer cost me all of $14.99!!!!! So their pool is now their waterer. However, I put two boards across the pool to keep them from swimming in it and hitting the de-icer. Also, if your ducks are picking on each other, most likely due to being confined due to snow....Then you need to shovel an area outside for them to have more space. It isn't fair to leave them cooped up in a small coop area that is normally for sleeping only.