The Olive Egger is a popular farm breed that infuses your egg basket with unique shades of olive green. The breed is created with the Black Copper Marans rooster and the Blue Ameraucana hen. Because it is a hybrid, they come in all sizes and colors. Some may have puffy cheeks, while others may have feathered legs, and some could have both. The shell of the Olive Egger’s egg is olive green on the outside and blue on the inside like the Ameraucana.