I have a three week BO old chick who is "preening" herself a lot. This behavior won her tailfeathers the attention of the other 13 chicks and I ended up separating her because her butt was being pecked at and was bloody. It has improved overnight while she was alone, but she still messes with it and a few other places. She does not appear to be damaging herself with this preening, it's just when her buddies jump in that she starts to lose feathers. I have tried to read up about mites, but I can't see any on her feathers or around her vent or anything. Should I be able to see them if they were there? I let her preen herself while she sat on me and some dry skin looking stuff flaked off on to my shirt. It looked kind of like flakes of the stuff that is around the base of their feathers. I am just concerned that I am missing something big here that needs to be dealt with. Thanks for any advice! Oh, she is happy and eating and healthy other than that. I have had one other case of feather pecking with another BO, but hers resolved as soon as I kept her apart long enough for the bad spot to scab over and quit bleeding, but she didn't peck at herself.