As far as I understand this, unless the egg was very, very shaken up before incubating, the air cell would not move to the other end of the egg. The air cell is trapped in its own membrane and can only 'slip' around if that membrane has separated from the inner layer of the egg shell. I have eggs in my bator now that were shipped to me and the box was very badly damaged along with the eggs.
. Several of those eggs do have a membrane so damaged that I can get the tiny air cell to move to the other end of the egg. I do not hold out much hope for these but a wise owl friend of mine, called WVduckchick, told me to incubate them anyway because, ".... you have nothing to lose, right?" Hopefully the air cell will stabilize and the membrane will reattach, but I don't know if that is possible.
Methinks you will have a duckling very, very soon. All will be well!!

Methinks you will have a duckling very, very soon. All will be well!!
