Hi all! We have 18 chickens, most of them are Australorps with a half dozen Golden Comets. So far we have fed them ad lib- constant access to layer feed and cracked corn. They have access to a run most days, if it’s not too cold here in northern North Dakota. Otherwise we keep them inside in an insulated coop with a heat lamp. My question is, do we need to ration their feed? And if so, how much feed to give them daily? I am concerned that they are eating more than is necessary, but simultaneously I understand they probably do need to eat more, now that it’s cold. Any thoughts will be appreciated- thanks in advance!