Yes, light does help...but I feel I must warn you about the adverse side effects too...lighting throughout the winter is very stressful on the birds, this is the time they naturally take off to rest and molt and many people (including myself) preffer not to interrupt mother nature. Lighting them so they continue to lay will burn them out quicker as well. Poultry, like humans, only posess a certain number of eggs. This is my first year with chickens and ducks and I got the chickens in March. They have continued to lay throughout the winter despite the reduced day light. The ducks I got in July and I think they were just coming of age around the time the days started to shorten which is why I think they are holding out....to each his own, but it's good to know both sides.
I have a question of my own...everyone talks about "getting the eggs before they freeze", yet all I hear is that you can actually freeze eggs in the freezer and when you go to unthaw them and use them, they come out about the same consistency they were before freezing. You can actually store surplus eggs in the freezer for a very long time. Ergo, freezing doesn't ruin the egg....right?