I have a almost 1 year old cinnamon queen that has been attacking my other hens. She got my Rhode Island Red this last Saturday so bad that we had to put her down. Now I've caught my cinnamon queen jumping on another hen pulling, pluking, and pecking at her neck area- the same area my Rhode Island was attacked. Im knew to chicken keeping, but I'm pretty sure I already know what needs to be done- but I just want to make sure. What do you all suggest?