Hi All, I've been reading a lot of posts and I decided to ask for specific recommendations on winter coop prep for my 3 hens. I've attached a pic of my coop. It is approx. 5x8 with two sides corrugated metal and two sides OSB, no insulation, 3-4 inches wood chips on the raised wood floor, and 4 windows with hardware cloth. I've already closed the windows and we close the door at night. The upper windows do close but do not seal (thought it might be good for a bit of ventillation) This being my first eperience with chickens, we have already had to rehome our rooster, leaving us with two hens. The three of them, now down to two, had never roosted, but rather snuggled up in one corner of the coop. We recently acquired a new pullet, who is only 15 weeks old and the other two hens have not accepted her yet. The little one does use the roost, all by her lonely little self. So I have two concerens. 1) Do I need to do anything to my coop in general to keep all three birds warm this winter? and 2) Is my loner pullet going to be able to keep herself warm enough all by herself on the roost? I live in Boise, Idaho and winter lows can dip to minus 10 (rarely anymore), with average winter lows in the 20's and occaisionally the 10's. Oh, and my girls are 1 Australorp, 1 Golden Laced Wyandotte, and my pullet is an Easter Egger. THANKS FOR YOUR HELP!!! THIS WEBSITE IS A WEALTH OF INFORMATION!!!