I'm on the Arizona thread and someone is complaining that one of their hens is showing aggressive behavior by pecking. Any advice on how to stop this. I think she is trying to establish herself as head honcho and is taking it too far. Probably needs to be quarantined and let the pecking order change in the rest of the flock. Don't think there are any roos. Don't know what the breed is. Anyway, any suggestions, etc.