Yesterday, Gloria had a large tear to the back of her comb. Now it is turning black. It is not scabs, because the back is entirely black. What could this be?
[ImMG ALT=""]https://www.backyardchickens.com/content/type/61/id/6729839/width/350/height/700[/IMG]
[ImMG ALT=""]https://www.backyardchickens.com/content/type/61/id/6729839/width/350/height/700[/IMG]