bcorps
Songster
Ditch that heat. They have down coats to keep them warm.
I have to say I was so surprised by my BO's cold resistance. I can be sitting out there spending time with them, shivering in the mid 30's. And they're just running around like little dinosaurs, enjoying the freedom. If they can handle that, I know they're going to be warm enough, huddle together in a well-insulated coop. (By insulated, I just mean double-walled, and not drafty).