My barred rock jimmie was preening herself earlier, and i saw a weird bump that she was "preening". It is on he back by her tail feathers. It looked weird, and it has a little tiny growth of feather growing out of it. I felt it, it wasnt so hard, still kind of fleshy feeling, but with a little resistance since there is a feather growing out of there. I took pictures, but they arent the greatest .