Hi all: We have just discovered a hen with a deep laceration to her side, under her wing, that may be to the bone. In fact, the open wound may expose a lung. We have no definitive idea how it happened--no sign of predator tracks in the newly fallen snow. We are worried it is a rooster injury, although the depth makes us wonder about that. Question. How may one go about treating such a severe injury. It is a Sunday, so the vet's office is closed. We have pulled her into the garage and placed her in an isolation dog-cage, so no other chickens may get to her. We debried what we could, but she has dirt-bathed recently, and we are worried that too much rinsing will lead to open bleeding. Is there a definitive sign of pain in chickens? If so, then we will not want her to suffer. However, if she is not in pain, then we would like to see if we can treat. Are there any predators that cause injuries like this? Any advice would be greatly appreciated.