Hi, I have heard a lot from both sides regarding winter lighting. Some argue that it is better to let them rest and no light. Some say light 24/7. I have been experimenting and would like to share my finding so far. I have a batch of brand new layers so age and molting are not issues. They started in August and have been going strong. The day light is down to less than 10 hours now and no supplemental light. The overall production rate has been on a gradual decline since late October. However, breeds do respond differently. The RIR, BR and Easter Egger are chugging along. Wyandotte is slowing a little. Silkie and Polish pretty much have ceased and account for the overall decline. Winter solstice is about a month away along with the temperature dropping. We shall see how they would react.