Home > Crops & Livestock > Livestock > Poultry > Backyard Flocks > Why Hens Stop Laying Eggs During fall, many backyard flock owners ask, "Why have my hens stopped laying?" Several factors may cause the reduction in egg laying, says LSU AgCenter poultry specialist Dr. Theresia Lavergne. Useful Links for Poultry Nutrition [Image: Poultry] Other universities and extension services throughout the United States have produced quality materials on poultry nutrition. This list of links showcases some of that work.