Do eat eat more in the winter? It is -15C (5F) at night. The coop is insulted and early morning temps inside have been as low as -4C (25F) In the last two weeks the amount of food disappearing has substantially increased. TheY look healthy. Nine hens are averaging 7 eggs daily. No obvious worms in their poops. Definitely no rodents inside, the coop/shed is well sealed. So maybe they are eating more just to stay warm. If this is common? Would there be harm from mixing cracked corn into their feed as a cheap source of calories?