I have a Rhode Island Red hen that is 15 months old that has a bald spot on her back near the tail. It has been there for about three weeks. My guess is: 1) she is molting, but she seems too young for that. 2) one of the other chickens is pulling the feathers out. 3) maybe a bug infestation like lice or mites. We recently cleaned the coop out and sprayed it down, then treated all birds. I did notice a small amount of blood coming out the base of a few of the quills so I am starting to think perhaps one of the other birds might be doing this. Any advice would be greatly appreciated.
