Hmmm......this is our first winter with chickens and I am surpsised that they have slowed down laying soooo much. It does get very cold here about 20 during the day and zero at night with short days. With this said we feed them extra in the winter, supply a heat lamp, and have a light on in the coop for 14 hrs a day. Up until a week ago they were laying normally and now we haven't seen an egg in over 3 days. Any thoughts? Is this normal? Should I be concerned?