I would like to know this, too. Currently I have eight Seramas in a very roomy coop with a run outside, but I know it will get too cold for them in another month or so. I have heard 40 degrees is too cold. I have been thinking I would have to turn over my extra bedroom to them! What do Serama owners do who live in the more northern climates?
Barb in the Fingerlakes
with a very mixed flock of free ranging Ameraucanas, EE's, Swedish Flower hens, etc, plus some young & beautiful Seramas I hatched this past summer