My first flock -- almost 1 y/o free ranging EEers -- but sleeping and pooing in the nesting boxes has never been a problem until recently. Lots going on: 22 hens down to 2 eggs/day, about half are molting so feathers everywhere!, been cold lately (am in central VA) so was wondering if they're trying to get warm or just bein' ornery. The only big difference I can recall is that I used to use pine shavings but got too expensive, so I filled the coop with straw, including the boxes. Can't think how that would matter to a hen but .... any thoughts how to break this filthy habit? Many thanks!!