They are about 1 1/2 years old and molting for the first time. Plus there are a couple of them that evidently have been pecked on the roost at night and have had bald butts for a long time now. One of the hens lost mega feathers this week within hours - looked like a chicken fight with layers of feathers in the hen house. I am getting worried about them for winter. Is there anything like feed I need to be giving to help grow the feathers in faster? Have they been known to freeze to death from not having enough coverage to keep them warm? We are in n. central Texas and they have an insulated coop but the temp gauge got down to freezing last year in there.