My chickens get to Free Range (more or less) in our decently sized back yard all day long. they have a built run but from the way they squak each morning ~like they are caged animals~ I know they like it out in the yard and they are spoiled. only put back in their coop at night and for a weekly mowing. my question is, in the Winter, will they spend more time in their coop for warmth and sleep (longer dark hours) or when its cold and snowy do chickens still like to free range all day?