It seems as if grass eggs are farm family chickens do not feed feed, chickens to leftover rice grains and other grains and other food for food, generally more space for movement, this chicken (of course, hens, roosters do not seem to be laying eggs) the eggs laid by the nutritional value of the higher and more flavorful, the eggs are raised eggs are raised in the farms to feed the main feed of large-scale rearing of chickens laid eggs, in comparison, the nutritional difference is little worse, but it is easier to Purchase, the two in the price in general there is also a difference.