I have 3 "white faced black spanish" hens and added 2 - twelve week old RIR's to the flock. The 3 WFBS hens are being real mean and pecking at the RIR's. The RIR's are in the coop and the WFBS won't allow them to come out to eat in the run. They're being very loud too. Is this normal or should I do something?