Need help, one of my hens has been losing feathers and exposing some skin.

[NewMoon5]

One of my RIR has been losing feathers on her back and wings, it appears if it's breaking. I barely noticed some of her skin exposing on her wings. Last year I added a rooster and he gets on top of her the most. Might that be the reason or natural, cause the other hens are not. Should I put something on her back?

 

[Judy]

Sounds like rooster damage, not unusual if he mates her the most frequently. I would put a "saddle" on her. you can make them, even without sewing, or (usually) buy them in our BST forum.

https://www.backyardchickens.com/a/patterns-chicken-saddles