My information on Hydrogen Peroxide is from a plastic surgeon when my Mom accidentally sliced a side of her hand off. It helps, but it shouldn't be used as a daily cleaning, especially if it's not extremely dirty (pooped on, etc.) Keeping the duck in a clean space should eliminate the chances...
Don't use Peroxide. It eats away skin cells and can effect the healing process. I would use a saline rinse instead to clean it, and possibly clean it 2-3 times a day. Also, keep her separated in a clean place where there's no way for her to get that spot dirty.
To me, it is looking fine. Are...