I think he will be able to pull through. I saved a black oprington hen that had 5" lacerations on both sides of her body from a rooster and full of infection. I took her for dead but decided what the heck might as well try because she may die anyways. She lived and is doing great. She even stood still while I pulled out all the infection from deep inside her. As long as the wound is clean he should heal great. I put antibiotics in my girls water for about 1-2 weeks since I already knew her wound was infected. Hope he pulls through he is absolutely beautiful!