I have a flock of 6 hens who have been together since they were 3 days old. Suddenly, a few days ago we noticed our Rhode Island Red being attacked by a lower ranking hen and the head chicken. They jump on her back and peck her comb and pull feathers. It seems to me that the lower ranking hen (an easter egger) has decided to move up in rank and the head hen is helping her. I need suggestions on how to proceed. In order to save our RIR, I let her stay out in our yard while the rest of the flock is in their chicken yard. If I separate them for a week or so, will that help the situation or make it worse? Or should I separate the lower ranked chicken who seems to be making the trouble?