What’s the difference between dark egg yolks and light coloured ones?

The colour of the egg yolk is determined by the hen’s diet.

The colour of the egg yolk is determined by the hen’s diet. You may also notice that eggs with bright yellow yolks have a stronger odour. Feed containing a high amount of wheat, barley and oats produces lighter coloured yolks, whereas dark yolks are the result of a hen having a diet high in corn or flax content. Flax fed hens will produce eggs with a strong odour, and you will also notice a flavour difference.

Farmers in Ontario and Quebec generally feed their hens diets high in corn; farmers in prairie provinces are more likely to feed wheat and grain products to hens as this is more easily available here.

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Ken Severson is the Nutrition and Poultry Specialist for Sparks Eggs. Ken takes care to make sure the hens and pullets are fed a balanced diet, and to safeguard their health and welfare.

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