I used supplemental light on a timer all winter, and got a great supply of eggs. However, my dogs knock the extension cord out fairly regularly, and this last time I didn't notice for almost a week... and have zero eggs. Obviously the light is going to be enough soon - I just found my first duck egg... but I keep chickens for several families, and we all count on them for eggs. Are the days long enough for me to just leave the light off now? Or should I supplement for a while longer?