The most common egg used today is the hen's egg, though duck, goose and other fowl are available in some areas. The eggshell's color is determined by the breed and has nothing to do with either taste or nutritive value. The color of the yolk depends on the hen's diet -- wheat-fed hens will have darker yolks than hen's fed other grasses. Fertile eggs (expensive because of high production costs) are no more nutritious than non-fertile eggs, and blood spots do not indicate fertile eggs, they are simply that: harmless tasteless blood spots.

The most common egg used today is the hen's egg, though duck, goose and other fowl are available in some areas. The eggshell's color is determined by the breed and has nothing to do with either taste or nutritive value. The color of the yolk depends on the hen's diet -- wheat-fed hens will have darker yolks than hen's fed other grasses. Fertile eggs (expensive because of high production costs) are no more nutritious than non-fertile eggs, and blood spots do not indicate fertile eggs, they are simply that: harmless tasteless blood spots.