Raising our own eggs we get quite a few of them, even get a triple yolker now and then. Not sure if it's cause their free ranged. Probably more because when inspecting eggs, the computer will dump any egg that shows any kind of abnormality i. e., blood spot, crack in shell, dirty eggs, etc. Double yolkers probably have an extra difficult time "beating (
)" the delicate computerized sytem.
Brian