We have 6 Hand-me-down Barred Rock hens. Ages unknown but 3 are not quite egg layers yet. The first month of having these ladies they got along well, no issues, everyone was happy. Now we've noticed one "Pepper" to be specific, missing feathers around her neck. It seems the dominant hen "Ninny" is the culprit. I understand a "Pecking order" is necessary for all flocks, but we don't want it to get anymore violent. It seems that she is only picking at her when they go to roost at night, During the day, all is kosher. Any advice to help poor Pepper in her plight to becoming a productive well liked member of society in the Fitztown coop.