Yes, for cleaning wounds on our ducks and chickens we use hydrogen peroxide to disinfect after cleaning with warm salt water. I'd recommend getting it to a vet if you can. So they could give an oral antibiotic.
Clean with warm saline water then peroxide. Dress the wound with neosporin or triple antibiotic salve. Maybe crush a baby aspirin and mix it in water for him. I'd take him to a vet if possible.