I had a chicken that developed a bumb leg and was picked on by the group to the point that she stayed outside the coop one night. I decided to rehab her for a couple of weeks in our kitchen in a pen, and she seemed to be doing well. We tried to reintroduce her today to the flock, and it wasn't pretty. They tried to rip her apart. I had to jump in and save her. I had to put her out of her misery. One of the hardest things I've every done. It's tough to stop the suffering of a pet you cared for, and seemed to care for you.