as for hardy chickens, I love Black Sexlinks. I live in Spokane Washington and we can get some very cold and ugly winters. I have Black Sexlinks that are cold tolerant and lay eggs year round. I also have Wynedott (spelling?). They are also cold hardy. I have a very large chicken coop and keep them in the coop all winter and keep wood shavings on the floor which stays dry and help keep heat in the coop. I only use one small heat lamp in the coop and it seems to be enough.