I have had this girl for almoat a year. She is the only one I have that is this bad. I have 4 other hens that have some mild feather loss at the base of their tails. Up until two weeks ago they where the only ones laying eggs. I have another 15 or so hens that have or are about to start laying. What im wondering is the feather loss do to the roo? Or have they been picking on the one in the picture? She isn't at the bottom of the pecking order and I have seen her putting some of the younger hens in their places.anyone with more experiance have any ideas?