I never got around to putting a door on my coop (pic below). My very spoiled chicks come and go as they please, I don't even keep the big swinging door closed. Its turning out to be a very cold winter already. Last winter on very cold nights I would nail a board up to cover the large door hole. I need a more permanent solution. I was thinking of some hanging plastic strips like you would see in the back areas of a grocery store. But I'm not sure the girls would go through it. ANYWAY, looking for ideas on door solutions. Something that will allow them to come and go as they please, but still block most of the air. Thanks in advance!