Due to my hens laying elsewhere, I kept them locked up the last couple days. I apparently was too stupid to consider my roosters, one of which is the alpha and has been chasing the other anytime it gets to within a few feet during the day. I went out to give some scratch and found the non-alpha by the run door, blood all over it's head and comb. I picked it up, and while it's alive and breathing (heavy) it's listless and won't pick up its head. I've put it in a plastic tub, and it still hasnt lifted its head and has just flopped around a bit. Am I looking at brain damage? Should I cull it immediately?