Hi, there!
I posted in your new members thread.
https://www.backyardchickens.com/threads/need-help.1412898/
Hello, and welcome to BYC!
Please post some pictures that show's the extent of her wounds over on the duck forums and we'll try to help.
Any active bleeding should have pressure applied to it for a few minutes using a damp towel. Very important you do not use corn starch or styptic powder to stop the bleeding.
As for basic treatment, you'll want to trim/or pluck the feathers around the wound, then flush copiously with fluids / we typically recommend either saline, chlorhexidine, or diluted down betadine. After you have sufficiently dislodged any foreign matter on the wound, apply a generous coating of an antibacterial ointment.
There are several antibacterial ointments out there, but I personally prefer Preparation H as it increases the respiratory component in the epithelium, which inadvertently promotes fibroblast growth. Neosporin or silver sulfadiazine cream can also be used.
Generally, we avoid the use of Hydrogen Peroxide since it can be toxic to fibroblasts at higher concentration amounts, so if its the only thing that can be used, it should be diluted down with sterile saline. I would highly suggest one of the ones I mentioned above instead.
Since you have an open wound, with lots of dead tissue space, and a comprised birds, and bacteria from the environment, from the biter, and from the bird's own skin, on the wound. The risk of infection is very likely. In which case, antibiotics would be very handy.
