Hi all! I have one Roo and seven hens. One of the hens has a few feathers missing from her back, I had assumed it was caused by the Roo when he mounts her. Yesterday, I noticed that he's been trying to "run her out". She was walking along outside the run, and I happened to spot him beeline right for her and started to chase her around the run, even though they were separated by the fence. Today, it was the same thing, except this time, all of the other chickens cornered her and started to attack her. All of them!! I ran out and got them separated, I locked the poor little thing into the coop and locked the cannibals out. My question is, could there be something wrong with her that they can just "tell", that isn't apparent to me? They were getting along just fine (even though she's at the bottom of the pecking order) up until just a few days ago. Now it looks like some sort of chicken horror movie, they act like they want to kill her!