I know, it's a crazy questions especially since 'wild' ducks don't build duck houses!! This is the first year I have had ducks. I have a pair of white crested. They hang with my pair of bb-bronze turkeys and the four of them stay outside all the time. Their pool had some ice in it but they were swimming away in it. I don't have to worry about their feet freezing? Someone please put my mind at eas !! I love my poultry!!