We had a rooster suffer from frostbite earlier in the year. We had it mostly resolved, although the damage was still apparent on the tips. Now we're in the middle of a cold snap, and today I came outside to find him with burned waddles, and a very dark, distinct black stripe from front to back on his comb. I'm assuming this is frost bite related, but it's not on the exposed part, it's right at the base of the skull. Blood poisoning? Anyone know what this is, or how I treat it? I feel bad for the poor guy.