The florescent light fixture I put in their coop is brand new, it's one of those shop lights that you can hang from chains. They are outside all day unless laying an egg in the coop. They're usually in the coop between 5:30 and 6:00 pm depending on how dark it is. Here on the coast our temps...
I'm having the same problem. I have 45 hens and I'm getting between 24 and 26 eggs a day. I have a florescent light fixture with daylight bulbs that comes on at 6 am and goes off at 8 pm. Last winter this time with only 24 hens I was getting 14-16 eggs a day. I changed to florescent because...