Our coop is insulated and was staying quite warm until this week. It has been really cold here and the water is freezing in the container. What kind of ideas have you smart people come up with to solve this problem? Friends of ours take their water in every night. I doubt the girls drink once they roost for the night but I would have to be getting out to the coop much earlier than I'd like to put it back in. I have heard of people using heated dog dishes and may look into that. I do not want to use a heat lamp. What has been working for you?