Well I can see this is either going to be a fairly big project for the fall or its going to be the same ol same ol this winter. I moved my coops this spring farther from the house and at the top of my back hill. I don't have electricity up there but I may have to run it. It's too far from the house for an extension cord to work. If I do that, maybe I can expirement with heat tape or something. Thanks for the input!
I haven't researched it yet, but there are a couple of heating pads you can buy at a pet store...one goes under the lizard aquarium, there are heating pads for small cats/dogs...and I've heard of a heating pad you use to germinate seeds in the real early spring...