I'll give the coup another 6 month cleaning and move the bucket with the water nipples inside the coup and get the tank heater ready. My coup is not insulated and I do not heat it either. I have noticed a couple of my hens that had bare backs are now starting to grow their feathers back in. I see this as a sign of mother nature taking care of her own. My chickens may not like snow, but they sure don't care about it being cold. If there is no snow on the ground they are outside foraging....no matter how cold it gets!