A deep orange egg yolk is widely taken as a sign of a healthier chicken and a more nutritious egg. That assumption is largely wrong. Yolk color is driven primarily by what a hen eats, not by the animal’s health or living conditions.
Carotenoids in the diet, not health, drive yolk color
The shade of an egg yolk comes down to one main variable: the amount of carotenoids in the hen’s diet. These natural pigments are present in foods such as corn, grass, alfalfa, and marigold petals.
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