There's "mean" and there's cornered-and-pecked-to-death. If it is the former, that's normal. Chickens WILL run after others and poke them in the head. I would suggest that you take time to observe & figure out if you are afraid they will kill her. Then she must be saved.
My sweet, sensitive DD drives me bonkers with her over-concern about normal chicken behaviors. I tell her that if there's blood, THEN I want to hear about it.
My sweet, sensitive DD drives me bonkers with her over-concern about normal chicken behaviors. I tell her that if there's blood, THEN I want to hear about it.