Ok, we have several chicken issues all at once (the broke beak thread). A few days ago I noticed my chicken's comb getting black at the tips. I know a chicken can get frostbite, but we live in Alabama. It hasn't dropped below freezing yet. You can see the discoloration in the pic below. Is this something we should worry about? Or is this something simple like she scratched it on something? Yes, we're new chicken owners and full of questions. Thanks in advance.