If you stare at them intently and long enough, you will definitely see them move!
Sorry, had to joke a bit...
Ducks absolutely love to take their sweet time hatching, it's one heck of a test of patience... you may or may not see the eggs move or hear peeping yet... take a deep breath and just give them time...
the air cells looked great on three of them, i thought i even saw one breathing. one i starting oozing out yellow liquid which really sad because i could tell it passed away. @ravynfallen . thanks for your help! it's hard to be patient. this is my first batch and I'll be so sad if they don't hatch