This will be my first winter with my chickens. 3 are 7 months old and the other 2 are closer to 4 months old. Maryland winters are....weird. one day it'll be 70 and the next 30, sometimes we get BAD snow and other winters little to none. Is there anything I should feed my girls to help them get through winter? Were doing the deep bedding method and I think the coop is too small to add a heating lamp (fire hazard). Someone from a feed store told me to feed a higher protein food like game bird feed instead of the reg laying mash. Just need some advice on feeding. Were currently going through the slow introduction process with my younger girls to my original established flock and want to just be sure when winter hits ALL the chickens will have access to food and they can survive winter. Thanks!