we have a flick of 8- EE, buff orphington, Rhode Island Red,black austerlooes and one other. They are61/2 months old. Coop is 10’ x 11’ with a large attached run. All the girls sleep huddled together on the floor- except for one lonely henthe roosts are 2 x 4’s -flat side up with a ladder to get there. The coop is not heated and I am very worried that the lonely girl will freeze this winter. It was 9 degrees last night here in northern Illinois and we will have many nights below freezing this winter. She eats and drinks normally. Thanks for any advice!