It can be surprising to crack open an egg and see a bright orange yolk instead of the expected pale yellow, or vice versa. Americans eat nearly 300 eggs a year on average, so you're likely to ...

The color of an egg yolk, whether it is orange or yellow, is determined mainly by the hen's diet and living conditions. While ...

The shells vary as well. Unlike yolks, the color of a shell has nothing to do with the nutritional value of the egg, said Steele. The color is "purely based on the breed of chicken," Steele said.

Aa Aa Aa Evolutionary processes have generated diverse color patterns of avian feathers, skin patches, and egg shells, which perform countless functions, including mimicry, crypsis, prey detection ...

Yolks are not the only thing that come in different colors. The shells vary as well. Unlike yolks, the color of a shell has nothing to do with the nutritional value of the egg, said Steele.