I have a dilemma. I inherited care of a small flock of Bantam chickens last year. (My father died and his wife still has the chickens) 4 hens and 2 roosters. They live inside a sturdy barn/coop that's has 8 straw bales and deep litter floor. 15 ft ceilings and about 15x10. A couple of years ago we had -19f temps and 2 bantam roosters lost their toes and most of their combs. I rehabilitated them at my house for a couple of months and they are doing really well. But I don't think they can withstand getting frostbite again. I have power but don't want to use any heat. So my only option is to capture them and bring them inside. We have 3 days of frigid temps and then next week the same. I don't think it's healthy to bring them in and out and then next week again?I worry every night about them. I live over an hour away. So it's harder.

Any advice? Radiant heat? Staying in the basement maybe? Basement is dirt floor and about 55°. Sorry I'm rambling. My brain half works. Thank you.