I have 6 hens of mixed breeds. My Ameracauna, Flora, has developed a habit in the last few months of mounting my much larger Buff Orpington, Peggy, and humping her! The BO doesn't seem to mind, and squats for the "would-be" rooster-hen, but Peggy's back feathers are getting plucked out and she's getting bald! Flora doesn't do this with any of the other hens. Is there anything I can do to stop this behavior and let Peggy's back feathers grow back? There's no blood, thankfully, just missing feathers. The Ameracauna is going through a mild moult, and is behaving aggressively about food. Generally, all six chickens get along and I've never had this problem before. Any ideas to try?