These spots are more common in eggs from younger hens or from eggs that are not inspected by automated systems. In commercial egg production, most eggs with visible blood spots are removed before reaching stores, which is why they are relatively rare.
Is the Egg Fertilized?
This is one of the biggest myths. A red spot does not mean the egg is fertilized and it does not mean a chick was developing inside the egg. Fertilized eggs would show signs of development only after incubation, which does not happen with typical eggs sold for food.
