We have 17 hens and no roosters. A few of my hens have some bald spots located behind their wing and close to their fanny. A couple have feathers missing on their backs near their tails, but I think this happened when we had the rooster that we had because I saw him picking on some of the hens. However, I cannot tell what is now causing some of my hens to loose their feathers. I have not seen any of the other hens picking on them, so it is hard to spot the problem. Anyone have any ideas? I feel bad for my poor girls that are loosing their feathers.