All our hens stopped laying over the winter and for about 3 months we got no eggs. My wife finally decided she'd try anything and gave them red pepper flakes. We don't know if it really made a difference or not, but we started getting an egg or two a week later. Maybe just an old wives tale and coincidence and not sure if we'd do it again, but might be worth pre-seasoning a few hens with some pepper before going to the BBQ.
