chickens are omnivores and opportunistic predators. if they get to roam around and get bugs/worms/etc in their diet, that is actually reflected in the nutrition

chickens are omnivores and opportunistic predators. if they get to roam around and get bugs/worms/etc in their diet, that is actually reflected in the nutritional composition of the eggs and meat. there are a lot of high quality eggs for sale with much more nutritious yolks. more expensive of course. free range chickens also get more sunshine and exercise, which reflects positively too.