They had eggs from 14 flocks of pastured hens tested by an accredited lab in Portland, Oregon. These are the same type of results found in six other studies done. Mother Earth News 2007 These fresh, free-range, fertile eggs are produced by happy hens! All day they range free , socialize, get fresh air and exercize, and feed on pasture, insects, and seeds. The beneficial organisms in the soil help to keep them healthy and may benefit us, too. The chickens have woods to lounge in the shade. Plenty of fresh, clean water is always available, wherever they are. Enjoy your eggs. We know you will be back for more of that great down-home taste! A Deep-litter method is used in the hen-house, where the chickens roost at night. This method eliminates odor through composting the chicken droppings every day, and turning it to soil! (A great boost for the environment!)