By Jessie Collins
Did you know that there are only 2 egg shell colors – blue (green eggs are a variation of the blue egg) and white. Brown, tan, cream, olive, etc. are due to the pigment that is deposited on the blue or white egg shell.
So what makes a blue egg blue? Blue eggs are due to a retrovirus that has transformed it’s RNA into DNA. This retrovirus is completely harmless and does not mean the chicken is sick or a carrier of a virus. The links below explain more in depth how this works.
References
Virology Blog – A retrovirus makes chicken eggshells blue
Aritcles Extension – COLORED EGGS AND FOOD SAFETY
Academic Journal – Poultry Sciene
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