I have just 6 hens less than a year old. Most of them started laying eggs in the fall and I have been finding eggs most days throughout the winter. About 1 1/2 weeks ago now there has been no eggs each day now. I am puzzled, since the days are getting longer and nothing has changed for them. I have had chickens for years and they might normally quit laying in the darkest part of winter but not suddenly in Feb. as the days are starting to get longer. We have had a milder winter than normal so it is not from extreme cold either. Any thoughts on this. I don't find any evidence of eggshell bits, as if they were eating them.