10/09/2025
Josie has 3 dozen small and 2 dozen medium eggs available let us know if you’re interested!
None of Josie’s eggs are white but have a variety of brown, blue and green coloration so we figured we would share some interesting facts to explain why.
1. Egg color comes from genetics.
The breed of the hen determines the shell color. All eggs start out white inside the hen, and pigments are added as the shell forms in the oviduct. Different breeds have genes that control which pigments get deposited.
2. Two main pigments cause color differences.
• Protoporphyrin IX (a brown pigment from hemoglobin) gives eggs brown shades — like those from Rhode Island Reds or Buff Orpingtons.
• Biliverdin (a blue-green pigment from bile) makes eggs blue — like from Ameraucanas or Araucanas.
Some breeds, such as Olive Eggers, have a combination of pigments that produce green or olive eggs.
3. Color doesn’t affect nutrition or taste.
Studies (like those from USDA and universities such as Penn State and UC Davis) show that shell color doesn’t change an egg’s flavor or nutrition — those depend more on the hen’s diet, age, and living conditions.