Update: I removed Neville, the rooster, for 5 weeks. My hen immediately regained her standing in the pecking order and went back to her sweet, happy self.
I reintroduced the roo to the flock. Helga, the hen, refuses to submit, and it caused him to beat her up again. She has a bloody comb and...
Aw. Poor girl. I tried the apron thing when my rooster was over mounting, but that's not a problem for me anymore because I have so many hens to distract him.
If I were you, I would get rid of the more aggressive rooster.
I have kept the hen in an enclosure beside the coop separated with chicken wire. I have put her in the roost at night to try the "wake up as a flock" thing. I completely removed the hen and then reintroduced. Things were fine for about a week, and now we are back at it.
I have not tried...
I have a flock of 28 hens and one rooster. My roo is a total gentleman. That is, until recently. After her third hatch, I have tried reintroducing my buff Orpington back into the flock. I've tried everything for now two months, but for some reason, my roo is suddenly aggressive towards this hen...