Twin chicken eggs

Good afternoon friends all stimit, who among you who ever see twin eggs? This is the chicken eggs where the eggs where the red eggs are two inside, indeed, if not diperatiin it seems like a rather large egg, but time is carefully observed there is a line boundary in the middle, as in this photography, what is possible this rare egg signifies something special? Or is it just a fluke, which is clear to me that is an unusual, special thing