Cage-free chickens stand in a fenced pasture on the Francis Blake organic farm, Wednesday, Oct. 21, 2015, near Waukon, Iowa. Blake gathers an average of 2,500 dozen eggs a week from his flock of 5,000 cage-free hens. An increasing customer demand for more eggs from chickens free from cages has left U.S. egg farmers with the question of whether to spend millions of dollars to convert or build cage-free barns. (AP Photo/Charlie Neibergall)