I've moved a couple but none that were nesting outside just in someone else's stall. I would never let one of my ducks keep a nest outside though.
I can understand that if you can 'duplicate' the nest site it might work, but in general I think that waterfowl bond as strongly to the nest site as to the eggs.
I've been watching a nesting Canada goose on a neighbors pond. She was nesting between the road and the pond right at the pond edge. 3 days ago the neighbor ran over and destroyed her nest with his lawn mower.
