We are scrambling to make our coop extra winter proof ( It is insulated, and has lots of hay for snuggling in if need be. The roosts are 2x6s so that their feet are warm at night. With temps that are staying WAY below zero, we are having some issues now. We ended up adding a small space heater last night, due to many of our chickens getting frostbite, and literally huddling and shivering on the hay in the coop. Its bringing the temp up just enough to prevent the shivering at least. We also have one chicken inside, because she decided to molt all of a sudden yesterday. She's nearly half naked now. And she has bleeding sores all over her tail from frost. The fact she lays an egg every day, is preventing us from culling her. We are at a loss of what to do. I do not want to straight up heat the coop and cause everyone to molt. Any ideas are welcome, except telling us to move, LOL!