I have more or less decided on Australorps as my hen of choice. Next month I will build the coop (still snowing here so I am a bit behind most people for springtime). It does get cold here in winter..and while I have never seen it down to -40 at night I have seen the temps get down to -30 on occasion and in the -20s often enough..will this be too cold for these girls? We don't have the humidity here like a lot of places which have snow in wither, mostly it's dry powder which helps a bit I think. Anyway (let me know if this is the wrong forum page) some advice is welcome.