My hens are 31 weeks old. 4 of them have started laying. One of them started and then stopped in early October, I assume because of the declining light. 6 hens have yet to lay an egg. Does this indicate a problem, or does it just mean that I'll have to wait until the light increases in the spring? We live in Maine, and I've read of a lot of people around here having more issues with laying this fall. I am perfectly willing to wait until spring, but I'm hoping there isn't some other issue affecting them.