I started giving my birds supplemental light on Dec. 1. We have 20 hens and 1 rooster. We'd been getting zero to 3 eggs a day. In this last week we went to five, then 8, then 11 eggs a day. We're doing it all wrong according to the article on the subject, but it's working! We're giving additional light at both ends of the day, not just mornings. And we did it abruptly, not gradually. I turn a light on in the hen house at 5 am and DH turns it off when he lets them out at daylight, between 6:30 and 7 am. I turn it on again at 5 pm and he turns it off at 7 pm. That gives them a total of 14 hours of light a day.