My chickens have been pulling and eating each other's feathers. I thought they were moulting but I can't find any feathers so the must be eating them. I noticed today a huge wound on my chicken, I think the others (one in particular) were eating her. It's circular about as big around as a nickle and about 1/4 inch deep. I cleaned it with saline wound wash and Betadine solution. I separated her from the flock. I will clean it the same way at least 3 times a day until I see improvement. Does anyone have advice for me on what I should do? Is this the right course of action?