We have 9 rhode island reds and this past winter I started to notice that some of them were starting to lose feathers and actually one of them was bleeding from her comb. We had a pretty cold winter, so the didn't want to go out much, so I assumed they were getting bored and things would get better when they were able to get out more. Well it isn't getting better. We use to let them free range during the day until we started to see some fox hang out around our property, so then we built them a much bigger run that they are in everyday (Plenty of room for everyone to have there own space). Wondering if anyone has any suggestions. All of them now have some form of feather loss except two of them. Most of the feather loss is on the backs and some are large patches over most of the back and some are just a small patch. It is completely bare. If this were lice or mites wouldn't all of the flock have the feather loss? Is it the pecking order and it is just habit now? I need to do something soon otherwise winter won't be good for the girls. I do give oyster shells also. thanks for any suggestions.