I have a small coop, 5 X 5 X 5 with a rooster and three hens. The temps have been in the mid-teens overnight and in the low 30's in the day. There are two small windows both half open, one to the south and one to the east. The door to the coop faces north with some natural windblocks. My question is; When the weather gets worse, which it most certainly will and the wind picks up should I close the door overnight to reduce the draft? I don't want to sacrafice ventilation but where we live (West Ohio) the wind seems to never stop. I don't want to freeze them out either. Right now they are healthy, happy and still laying with no artifical light even though the days are short and no heat. Just wondering about the future?