Some folks think brown eggs have more nutrition than white eggs. But nope, you can't tell an egg by its shell! An egg's shell color is unrelated to its nutritional value.
Eggshell color is determined by the breed of the hen; white eggs usually come from white-feathered hens with light earlobes while brown eggs are produced by red/brown hens with red earlobes. All eggs start with a white shell, and brown pigment is added near the end of shell formation to create brown eggs.
Why then do brown eggs usually cost more? Mostly because the breeds that lay them tend to be larger and more expensive to feed. Also, because many premium or organic lines use brown eggs and you are paying for that, not the egg color.
