I was told I should check the duck page to see what ya'll are feeding your ducks. I was told Corn chop. I have two ducks now. One was a give away at a ducks unlimited banquet and then I got him a girlfriend. They live with my chickens... and I'm kind of tired of my chickens eating their chop. Not enough protein for my girls. Do I also need to keep their water available all winter long? If so I need another stock tank heater.