Here's a question for OTs: Do you heat or insulate your coop? Why or why not?
Our family has been keeping chickens, in this northern state, for well over 130 years, long before Edison's influence and Rural Electric existed. Like my grandmother before me and her mother before her, our 20x24 barn/coop would be impossible to economically insulate or heat. There is also no need. I keep hardy breeds, called the Americans, ie RIR, BR, and those bred out of that hardy stock. I've also never understood how one can keep heat in while providing maximum ventilation, something that is vital. With wide open eaves for ventilation, all that expensive heat would be lost immediately.
Unlike our chickens, my wife and I do not have down coats and feathers, so we save our precious heating dollars to just squeak by with our own needs.