Ok, I looked on the forum and can't seem to find an answer to this: Does anyone use cloth in the chicken door in their coup to keep heat inside? It can get rather drafty here in Ottawa, and I was wondering if my future chickens (chicks arrive on October 9th!) would learn to use a cloth-curtain in a coup door? Does anyone have any experience with this? Thanks in advance. Tom P.S. I will post pictures of the coup construction soon.