So yesterday, I haven't seen any blood but today when I got back from school, one of my chicken (Buff Orpington) have red near the back of the comb and the back of the comb is a lot of black spots. I tried to grab her to put ointment like petroleum jelly but she wouldn't let one finger of mine on her. I have 2 other chickens, Brown Leghorn and Rhode Island Red. I don't know if there is a nail sticking out in the coop that might stab her, an extra piece of wood, or what! I'm scared right now. Why can I do?