We have 11 chickens, and one of them doesn't seem to be doing so well. We have 3 silkie bantams, 2 production reds, 3 production blacks, and 3 Rhode Island reds. One of the silkies is a rooster. All of them have been doing well, but one of the Rhode Island reds is losing fur on her lower back, right above her tail feathers. This has been going on for about a month, but now she's losing feathers on her neck. I knew that roosters usually will climb onto the hens' backs to mate with them, so I thought that maybe she was losing feathers from that, but now that she's losing them on her neck, we're worrying. My parents went in and said that they think they saw blood in the nest box, too. Is there anything we can do to help her? What's going on with her? She's around 10 months old if I remember correctly. We used to have another rooster, but the two didn't get along. We kept the docile rooster, and I can't imagine why he would terrorize her so much and leave the others alone. We live in Northern Maine and it gets cold and snowy here, so they are only let outside depending on the weather, which can be anywhere from 1-7 times a week. It can't be from being stuck inside or anything like that, though, because no one else is having the same issues as her, not even her sisters.