This is just a hypothetical, because the egg in question was served at lunch yesterday as a deviled egg. Anyhoo, I boiled up a bunch of duck eggs yesterday morning, and one of them had virtually NO air cell, just a tiny dimple about 1/2 inch wide and maybe 1/4 deep, and it was on the side of the egg, not at either end. The wide end where the air cell normally would be was complete full of eggwhite. What would happen if that egg had been incubated -- would it live until the internal pip and then die due to not being able to find an air cell? Of course, that air cell should expand somewhat during development as the egg loses moisture, but it still would have been in the wrong place. Just curious.