Help Please

[Kalalyn21]

Just found my girl looking like this, newby to raising chickens. Can someone please tell what this is and how to treat her?
Thanks

 

[Roosterlover5]

Looks to me like she just got pecked by another chicken. It used to happen to my rooster and the part where he got pecked turned black but eventually healed.

 

[Back2MyRoots]

Looks like another chicken pecked her to me. I would rinse it very well with some saline to get it clean then dab a little peroxide on it and keep her away from the other birds until it scabs up well. If it's very deep, you may want to keep her apart for a few days. Clean it up first and see how it looks.