So I have a flock of about 8, all female, of those 8 I have 3 isbars and I think my issue lies within them. I have 2 blue and 1 back and the black is getting pecked. The location is peculiar though. It started on the side of the neck and has worked its way down to her breast. I know all the usual culprits. I give them good layer feed and have recently added a multiflock option with 28% protein. They aren't bored or overcrowded, their coop and run is plenty big and they free range every day. I see no mites, and I think that would be more of an issue around the vent anyways. I'm stumped. Also, the black who is getting pecked doesn't mind at all, I never hear her yelling, there is never any blood, or redness even really. She still hangs with her buds all the time, eats and drinks normal, lays regularly, shows no stress. I'm out of ideas. Anyone ever experienced anything even remotely similar??? I will try and post pics, bare with me.