Well it only go down to about -18 here in Bristol. Oddly enough the girls have decided it is now time to start laying again; found a hidden nest in the hay-pile. Looks like everyone here did fine with the cold. I feel as long as they can get out of the wind, have thawed water and, lots of good food, they are fine. I have not used a heat lamp in years, and I've never lost one to cold. Well that's not true, I did have one top-hat rooster who couldn't find his way back to the coop on a windy wintery day, get bad frostbite on his feet and I had to put him down. But I don't count him as his head feathers made it hard for him to see even when there wasn't a blizzard.