My rooster got in a very bad fight with another. I got rid of the mean who did the damage, but the remaining rooster had his wattles badly wounded. I cleaned it up, put medicine on it. A week later part of his wattle is necrotic and black but not infected or oozing. He seems perfectly normal but the area on his wattle is black. Will it fall off on its own? Should I do anything? just leave it alone? He is eating, drinking, breeding, and acting normal?