I hang a heat lamp mainly to keep it dry in the coop. It only slightly warms the area near it. I put straw in two very large cardboard boxes (thank you Amazon) next to the roost and they snuggle down in the straw together. Their run is partially covered so they can go out of the coop into the run, but don't free-range because they don't like the snow. They go to the door, look at it, and turn around and come back in. I give them BSF larva and mealworms, yogurt, and apples. Yes, my babies are spoiled.