My nephews are fascinated with the chickens and their eggs. They are especially enamored with the "freckled" ones. I only have RIR's, and I only get freckled eggs occasionally. They all free range, so I am assuming some of them eat something that changes the shell of the egg... Is it dirt, stone... What do you think. I have 24 chickens and I am continually amazed at the different colors of the eggs. Thanks for helping the "chicken lady" answer her nephews questions!