The egg on the left is store bought and more yellow in color. The egg on the right is from one of our backyard chickens. It's much more orange in color, though the photo doesn't show the diffrences as well as in real life. It's also "taller." The fresher any egg is, the firmer the yolk and taller it is. Plus the yolk of our eggs is way thicker in texture. Doesn't just run out when cut into.