Hello: I'm quite new to the idea of raising chickens. I think I pretty much have everything figured out as far as the coop and protected foraging for the chickens goes. But before I take the leap and get a few, I need to know what do I do with them during the winter time? It can get pretty cold here in Michigan. I have an enclosed barn where I can move the coop, but it's still cold out there. Also, I am looking at some smaller breeds that are supposed to be good egg-layers. Of Anconas, Buttercups, Brown Leghorns, and Hamburgs, which would be best suited for a Michigan climate? Which of these breeds are friendly? Thanks so much for the help!