sorry i have to bring this up but i need a little advice on heating the coop. i am bringing home 10 chickens at the end of the month. they are about 4 months old and the guy i am buying them from keeps a heat lamp in the coop. i did not plan on heating the coop but i have to now. i am in usda zone 5b and it will get down to -15 to -10 here. so now i am wondering if i should just heat the coop every year? how cold is too cold? plus it would be nice to keep the water from freezing too. the coop will not be insulated, will have a dirt floor. my breeds i am buying are black stars, white leghorns and easter eggers. the coop will be 6x10 and will me on the north side of the house. i know i will have to heat this year but am not sure if i should heat the years after? i know this topic has been talked about a lot and i have read other threads but it would be nice if i can get all your opinions on my situation also the power never goes out in the winter here and if it did i would just run my generator.