I have 3 Runner Ducks that hatched out just about a week ago - obviously still in down. Right now, they're in the house in a plastic bin with a 75 watt lightbulb for heat. I'd like to move them out to the brooder in the barn, which stands about 18" off the ground and has a hardware cloth floor. Our nights are quite cold, however. Do you think it's too soon to move them to the barn brooder? I could run some cardboard protection around the front of the brooder, which is also hardware cloth, and the other sides are wooden. However, I'm afraid the cold will creep up through the flooring and chill them. What do you think? Our days are running in the 80s, but the nights get down to the 50s and last week even into the high 40s. Perhaps I could line the floor of the brooder with cardboard or a towel so they can snuggle into it at night?