It looks like an old injury that has scabbed over and is trying to heal
I would soak her in a water soapy bath. Once she is good and clean see if you can tell if it is an old wound trying to heal or something else that may have ruptured.
Clean the wound site well using diluted betadine or saline in a squeeze bottle you can aim at the area to rinse it.
It looks very dry to me in the photo. I would coat the area in Blu Kote to seal it.
Blu Kote is antifungal, antibiotic, antiviral type medications used for horses. If you use for a chicken you aren't supposed to later slaughter the chicken for food.
I would offer her some extra protein and a vitamin/mineral supplement to help promote healing.
I would soak her in a water soapy bath. Once she is good and clean see if you can tell if it is an old wound trying to heal or something else that may have ruptured.
Clean the wound site well using diluted betadine or saline in a squeeze bottle you can aim at the area to rinse it.
It looks very dry to me in the photo. I would coat the area in Blu Kote to seal it.
Blu Kote is antifungal, antibiotic, antiviral type medications used for horses. If you use for a chicken you aren't supposed to later slaughter the chicken for food.
I would offer her some extra protein and a vitamin/mineral supplement to help promote healing.