It got to -40°F this winter with a good wind. We had frostbite on a few combed but it wasn't as bad as it could have need. I think the coop has a lot to do with winter hardiness. It is important that the chickens can cover their feet with their body and moisture needs to be kept to a minimum.
I have a Buttercups rooster that did just fine. Buttercups are listed as not cold hardy.
I have an Egyptian Fayomi that was bothered the most by the cold. The Egyptian Fayomi is the only breed that I have had that I would not have in the bitter cold. The cold adgatated him so much more than the others. He did survive just fine but has a frostbite comb now.
My leghorns are remarkably cold hardy.
I have a Buttercups rooster that did just fine. Buttercups are listed as not cold hardy.
I have an Egyptian Fayomi that was bothered the most by the cold. The Egyptian Fayomi is the only breed that I have had that I would not have in the bitter cold. The cold adgatated him so much more than the others. He did survive just fine but has a frostbite comb now.
My leghorns are remarkably cold hardy.