Looks like a dog may have bit him through the fence? My concern is it looks like the tooth went through the bottom of his beak on one side. U can see it hanging. Tried to push it back but it didn't work. Top of beak damaged also. He ate a few bites of food I ground up, not much. Looks like water may be leaking from it though. I cleaned him up and hes sleeping now. Just joined this site. from Arizona.