Hi,there! I'm from Canada on the East coast, so our winters can be pretty long and cold. I have many different breeds and crosses of chickens. I find Plymouth Rocks,Turkens, Orpingtons, NH"s and RIR's lay like troupers during a cold winter. That being said, many breeds that I have are white egg layers....these gals will lay right through the winter too. Green and blue egg-layers and chocolate egg layers are a little slower in laying but they do catch up. I feed a varied diet to all my birds plus a few restricted treats ( some scratch,BOSS and kitchen scraps). Fresh ,clean water and nice dry litter for them to scratch in.Towall