My orpinton cross peaches is being picked on by my 2 RIRs. They have been in the same coop for months. You can see the 2 RIRs on my BYC page. Angel (a RIR) jumps on her back and starts pecking her head. I was just thinkng it was the pecking order but they never have done this before. Pebbles (other RIR) sometimes runs after her. Can you tell me what is going on?