I recently posted about one of my girls who was missing feathers on her back near her tail. The lady at the feed store said it could be a winter molt starting. A few days passed and nothing more. Just this poor thing who's spot looks bigger, but no wound. Then today when cleaning the girls out I found one of the white plymouth rocks violently pecking the other white plymouth rock. Now she has a huge spot missing in the same place as my smallest buff. The other 2 buffs snap back at the her so far and they seem fine. Once I was able to catch and hold the pecked PR, I brushed her feathers up & this pecking has been going on for a while. There is a scab being hidden by other longer feathers and this area is about 2" long. The buff is not as bad and no scab. What are your suggestions. I was originally going to isolate the first chicken, but now I think I need to get rid of the PR doing all the pecking. I can't even pick her up with out her pecking me harder then ever. Any with suggestions?? She was always alittle nasty, but this is bad. She lays nearly eveyday despite the cold and no artificial heat or light. If I isolate the aggressor, do you think she would change, or is it soup time?