I knew the answer to this one already, but I couldn’t help myself… I got sucked into the internet article anyway.
A hen’s breed determines the shell color of the eggs it lays, which can range from perfect white to cream to brown to olive and even blue.
Here’s the NEW thing I learned: You can generally determine the color of the egg a hen will lay by looking at its earlobes. White earlobes mean white eggs; brown or red earlobes mean brown eggs; etc.
CHICKENS HAVE EARLOBES!