We have 3 hens that are between 21 months to 23 months in age. The first winter we had them they slowed down in egg production but still layer through the winter months, with no supplemental lighting. This time they stopped laying in November, and as of today (Feb 11) we have had no eggs. Two of the hens molted in November, but seem to be back to fully feathered and looking normal. We feel organic layer feed and supplement with corn scratch (just started doing that one week ago). The breeds we have are Welsummer, Americana and Silkie/Cochin Bantam. Have our hens just gotten too old to lay, and should we expect that maybe in spring they will start again? At what age do hens usually completely stop laying? Are they maybe to this point and that's why they stopped? We have them housed in a chicken tractor with a supplemental run, so they have access to grass and exercise! However, we got them for egg production, so this egg strike has been really frustrating! Any ideas or suggestions would be appreciated!