i'm getting into bantams soon and was wondering what is too cold for a bantam. living in southern michigan i keep a heat lamp in with the big girls if it gets really cold and it seems to keep them laying,but will the bantams be ok without heat.they'll have a small coop its about 16x30 and i'm thinking about getting 2 hens and a roo,will they snuggle enough when it gets below freezing?