We have 5, 7-month old hens who have just started to lay. 2 Buff Orpingtons, 2 Brown Leghorns and 1 Ameraucana. One of our leghorns seems to be missing quite a few feathers on her backside. A week ago, she had a few open wounds, and while those have healed (we put her in a seperate area during the day), she is much more bald in that spot (right above her tail feathers). We have not noticed anyone pecking her, but we are concerned it is more than the others establishing pecking order. We have seen her rub her head against that area that is missing feathers. Any advise you have would be helpful!