Eggs produced according to national U.S. Department of Agriculture (USDA) organic standards related to methods, practices and substances used in producing and handling crops, livestock and processed agricultural products.
All organic eggs are from free-range hens and must meet all of the requirements for those, including being raised outdoors or having access to the outdoors as weather permits.
Among other requirements, organic eggs are produced by hens fed rations having ingredients that were grown without most conventional pesticides, fungicides, herbicides or commercial fertilizers. While growth hormones are also prohibited, no commercial laying hen rations (whether organic or not) ever contain hormones. Due to higher production costs and lower volume per farm, organic eggs are more expensive than eggs from hens fed conventional feed. The nutrient content of eggs is not affected by whether or not the feed ration is organic.
– See Production