I was amused to read Greg White's letter in your March 1 edition on receipt of stimulus money. How I wish that it was that simple and that we could actually see a positive result of our hard-earned tax dollars. However, I'm sorry to say that even though Creighton Brothers may be feeding their chickens better, that is not the reason for double yolk eggs.
Double yolk eggs are actually fairly rare, about one in 1,000 for commercial eggs. When an egg starts its journey inside the hen, if the normal process of development is not followed, then two yolks are released at the same time to travel down the oviduct together, being surrounded by one shell and giving us the double yolk.
Most double yolk eggs are laid by young hens of productive egg laying breeds. As they become more mature and their systems settles down to correct production then the double yolks become less frequent to non-existent.
So if you got three double yolk eggs together - you really may have found the closest thing to any stimulus that any of us might receive!