Should I put a door on my chicken's coop? Smaller coop about the size of a dog house with the run off of that. The chickens are still a bit young so they stay in the enclosed run all day. The door/hole they come in & out of is in the middle of the coop. They seem to sit right on the edge of it instead of snuggling inside. Is this going to be too drafty for them in the winter? Should I put an actual door that can be closed?