One of last summer's medicinal hatchings (remedy for a perpetually broody Buff Orp) was a dozen Serama eggs from a friend. 6 hatched, 1 died (not thrifty from the get go) and 1 got snatched by a hawk. So we now have these 4 little hens running the show & laying like crazy. We had planned to give these birds away but ended up keeping them and they've been just great, healthy little laying machines - all 4 lay an egg every other day. We've got a customer who's obsessed with making deviled egg poppers using the teensie eggs. Anyway, I've been doing a little research on these birds since we've decided to keep them and am a little worried over the cold tolerance issue. We had a very mild winter this year in the Piedmont of NC and the Seramas seemed to have no problems. There are 20 birds in the flock - 5 of which are bantams & 6 Ameraucana pullets (just now 5 mos old). I'm sure the big birds contributed to heat in the house & our lowest temp was something like 19 F one night and the rest of the time avg above freezing for the most part. Again, birds seemed to do just fine. Is there anyway to quantify cold tolerance temps for this - or any other - breed?