this is a really weird story! before Christmas, we put up christmas lights on the coop. We were quite late in taking them down, (considering it was the end of Januray) but we didn't think that it would affect anything. We were wrong. A few days after that, the chickens started laying less and less, until most weren't laying at all! Then, about two weeks later, we thought that maybe it was becasue of lights, so we plugged them back in. Two days later, the hens were laying full time again. They have always had at least sixteen hours of light. It doesn't make any sense!!!