I have 10 pullets that are all 27 weeks old. They came from a hatchery and haven't laid one egg! They are all different breeds, including cochins, wyandottes, brahmas, and orpingtons. I understand that we have shorter days now, but does that mean we won't get ANY eggs this winter? I don't provide artificial light unless it's going to be below zero and I turn on their heating lamp. They are all on layer feed, grit, oyster shells, and various scraps. HELP! I am totally a newbie and am not sure what I can do if anything?!?!