Three of my pullets (8 months old) have started beating up on the 4th. For the past ~2 months she has been pecked on the comb (it came and went, and now is back again). Now they are pulling out the feathers from her head (see pics). I am worried they will start pecking her to the point of giving her a head wound? What should I do? PS. Yes, she is in the bathroom right now. As more feathers disappeared, I worry that flesh will be next. She is happily perched on the edge of the bathtub.