I'm in the process of building my chicken coop. My husband was going to build me a coop of wood, but he ended up having ankle surgery and can't bare weight on his foot for 6 to 8 weeks now. I was thinking about purchasing a plastic shed for my 15 chickens that are almost 4 weeks now. The shed comes with 2 windows, roof vents, and is about 8'x 10'. I figure it will be easier to clean also. I live in mid-Michigan so the winters are pretty cold. If I stack straw bales around the three sides they should be warm enough, right? I also plan on running electricity out to the coop too so they will have a light and a water warmer. I would really like your opinion on this. Thanks!