I do believe that my girls have gone on strike!!! I have not gotten 1 egg from them for about 2 weeks now. My five chickens are 18 months old.They have been going through their first major molt too. That started in Novemeber. And with the shorter days I figured egg production would be down too, but it has come to a halt. Is this common for none of them to lay eggs? I haven't added light to their coop, I figure just to let nature run it's course. But I didn't expect the eggs to completely stop. Hopefully now with the days starting to get longer I will eventually eggs again.