I live in Wisconsin and my neighbor has around 60 chickens, 7 ducks and 2 geese. She hauls hot water to the coop twice a day because their water freezes. When she goes out of town I am in charge of this and I feel like there must be a better way. My question is what is the best way to ensure the chickens have water (not frozen) in freezing weather? There are outlets in the coop but not many. Also, they are separated into 5 groups so some get tubs of water and some get smaller containers.