I had a bantam pullet in -40F weather that got frostbite. She only lost a bunch of toes and some of the foot. Gotta be another factor there. Where does she roost?I'm not sure. We had a cold snap a few weeks ago and had temperatures in the negatives for a while. I visit her coop several times daily and I'm shocked I never noticed her. There are fifty chickens being kept with her and I thought they were all fine, but I guess I never caught it. I feel horrible about not catching it earlier.