Discrepancy.

I think we are dealing with a double yolk egg. It is amazing to see the difference between the eggs we receive daily from our Hens. Sometimes we will get an egg with a double yolk. These two yolked eggs are usually almost double the size of the single yolked majority. Double yolks happen naturally and in large operations may be discarded as eggs are candled for another use such as bagged eggs, although before we had our own hens I do recall grocery store bought eggs with a bonus yolk.