This is my first year with chickens, im pretty sure one of them has frost bite. I have attached some photos to show you. Everywhere seems to be ok apart from the combe of my white chicken. I think she is a Longhorn of some sort. Her combe is quite long, and i think has always hung to the side. She still lays eggs on a regular basis and is eatting and drinking. She often jumps onto the roof of the coop and is running around as normal so she does not seem in pain or upset. As you can see from the pictures of the coop and run. There isnt any way of adding extra ventilation, which is something i considered. The laying box / area is the only part that lifts open. Although i always keep this shut as i dont want drafts going through. And the run is a mud pit due to the rain. I generally give them a full clean out ever 7-14 days. Which includes scrapping up all the wet mud that has built up. It was freezing for a week or so, about 2-3 weeks back. But its slightly more mild now. Maybe 5-10 degrees celius each day. Help please!?... Frostbite?? Other chicken, ok i think? Run and coop How the coop is normally left. Day and night. Only possible way of adding ventilation. All help, cures, remedies and advice greatly accepted. Thank you all in advance.