I've had this exact thing happen with chicks. I was actually able to peel the total shell off, and the membrane was mostly intact, then I gently peeled that off. I was able to leave the chick in the incubator on a clean paper towel to allow it to continue absorbing the yolk sac and develop.
It worked out great (it's happened to me a few times), and the chicks were perfectly healthy......
Good luck and I'll bet the duckling will be fine....
It worked out great (it's happened to me a few times), and the chicks were perfectly healthy......
Good luck and I'll bet the duckling will be fine....