I've been out of chickend for a few years and rely quite a bit on wht was handed done to me by my grandparents. Doing quite nicely, lots of thanks given regularly for what I was taught. Need some help with the latest challenge. It wasn't something I saw before I got the run open. I saw the birds only from above. When they got out into the open, I see that the Black (Sexlink/Australorp ??) was missing a lot of feathers in the neck area. Picked clean, so they wil grow back. Looked her all over, no sign of mites . . . When they went out today, it's obviously become a matter of pecking. The feathers on her lower back, forward of her tail, have been pecked out and the skin is bloody. Some years having passed since I had a teacher . . . what are the recommended handling, ointments . . . to get her through and still keep her part of the flock?