I noticed this morning that my best laying hen has no feathers on her butt. She is one of 7 hens that I have that were born around the 1st week of March 2011. This baldness is about 2" below her vent and travels down toward the underbelly. Otherwise she seems fine. I assume she is being picked on by the others but I have stood and observed them several times today and they can be all crowded around her but dont touch her. Maybe they are just being sneaky, I dont know. Is there any other reason for her to be totally bald there and is there anything I need to do for her? She appears to be healthy otherwise and I picked her up and inspected her and see nothing crawling on her. She eats Purina Layena and I read somewhere that it being without meat products tends to make chickens cannabalistic. Anyone know anything about that?