To all who just installed a light and are waiting for eggs:
Adding lights is not a magic bullet. Once the hens have stopped, it takes a while to get going. Jumping them from a natural for this time of year 10 hours of light to 14 in one day will not help. You must increase the lighting very slowly, about 10-15 minutes every three days until you are up to 14+ hours of light. The hen's body must produce hormones in response to the light, and it takes a minimum of several weeks to get these hormone concentrations up. Unfortunately, when the day length has dropped this much, it may take up to six weeks before your lights make a difference.
For next year, what I suggest is waiting until you see the first signs of moulting in late summer, then adding light 15 minutes every three days. That will mean taking into account the fact that the day length is decreasing at the same time you're increasing light. You want your birds to moult, because they need to renew those feathers. Use the light to trick their bodies into thinking it's spring so they begin laying immediately after they finish their moult instead of waiting until April.
http://umaine.edu/publications/2227e/
http://www.sp.uconn.edu/~mdarre/poultrypages/light_inset.html
