I was down to about 12 as well. No frostbite this morning. I had frostbite last year when it was barely freezing, so the new, larger open front coop is doing the job!We got down to 12. The birds are fine. They do not even act cold. They are acting as they always do.
I am wondering about some of my plants. Some of them are cold hardy up to and around this point. This weather will have some effect. 12 is unusual for us so it will be interesting to see where the limitations are.