What does frostbite look like? I have two hens, a Production Red and a White Rock. Both are pets kept for eggs. They have a nice coop, well insulated on four sides, and they choose to sleep on top of it. It's inside of a larger shelter with a roof and three sides. We live in Alabama. It's been dipping below freezing this week, but not far below. My red hen has a larger comb and I think it's starting to look black in some spots. Is this frostbite? What should I do?