Our hens are less than two years old, yet all four have stopped laying. The easter egger stopped about 6 months ago, the New Hampshire Red stopped 3 months ago (when she molted), and the barred rock stopped one month ago. Finally, the last hen, a pearl leghorn, stopped last week. It appears she is molting (in the winter!!??!). They are consistently fed layer feed and some cracked corn weekly, but they are not overweight. They range all day about 3 times a week. Could it be that they do not range enough? We have the original garden coop design, and we've managed to get 3-4 eggs a day with no ranging. All advice is greatly appreciated! Thanks!