I was out of town for about 24 hours and came home to my Easter Egger's rear end stripped bare. I believe this all happened while I was gone, but possibly could have started and I hadn't noticed shortly before I left. I have a total of four hens (no roosters) and she is the only only with this problem. Eating, personality, laying all seem normal. She is about 17-18 months old and has never molted. I expected molting to be all over, not just in the one area. She is one of my two older hens and didn't think she was the lowest in the pecking order, but I know she's not at the top. I introduced the two newer hens about four months ago and they seem to be getting along well at this point. Any ideas what this could be?