I have 9 BO hens, and one rooster, Hank. Some of the girls (5) started losing some feathers on their backs. I thought they were just starting to molt. One got a spot that was completely bare, with a small bleeding sore. I did some research that indicates they normally start losing feathers on their head when they molt. I started to think that maybe these girls are getting too much attention from Hank? Is it common for a rooster to not equally distribute his affection. Should I seperate him from the girls for a while? I'm sure it will break his heart. The last picture you can see the hen that is down to bare skin with the sore.