Sounds great!Thank you very much! I brought them inside and even turned the garage heater off. The garage is now at 41 degrees F. The chickens look fine, and when they are done playing, eating, or drinking, they either roost or cuddle. I think they are cuddling more now since I turned off the radiant heater a few days ago and more so now that the garage is colder, but I don’t see them acting weird. When I open the brooder, they all jump out of it and go crazy for worm treats.
And that 41 degrees is pretty close to the 36-38 degrees you measured in the coop the other evening. Since they are doing fine at 41, there is a very good chance they will be fine a bit lower as well.