Who says coops need to be tight, warm, closed in structures?? Read this book!! It is all about open, and I mean OPEN front chicken coops year 'round!(w/ hardware cloth of course) and in the north, new england, and canada! He says the more fresh air the better. Watch your egg production go up! Healther and hardier flock! Hatching through late fall! Quite the read and with pictures! A must read! If you are heating your coop, your nuts!....lol Written by Prince T. Woods M.D. and fowl researcher Has anyone else read it??? .