Just be patient. You're suppose to wait and see not panic! Anyway birds eggs will only hatch if you get another male bird with them so go buy a male duck (same type of duck but male) if possible please good luck and I hope they will hatch.
I think the mother duck can ear them as the chick develops. Just leave it to the bird. You will soon know if the chicks are dead, as the mother will loose interest in her eggs. That's life.
My Muscovy duck is sitting on eggs and they're supposed to hatch this wekend and I wanna know if she can tell if any are going to hatch or not!!!??!!!
