hello, i have this 9 week old ee pullet...one of the other pullets started picking at her back feathers. i moved them all to a larger space and hadn't had any trouble for over 2 weeks...but, today i came home and found that this pullet had an open wound just above her tail feathers. it's pretty terrible looking and i think there is exposed bone. i have her separated...should i start her on antibiotics? should i wash out the wound and put antibiotic ointment on it? should i try to wrap it? thank you for any help!!