So...
I had to go out of town this week, left on Monday and got back Thursday afternoon. The duck and eggs were all there on Monday and according to my dad (who picked up the mail on Wednesday) they were gone. I guess that Ducklings don't waste alot of time sitting around in the nest.
There are a couple of ponds near my house so I went duck hunting this morning but did not have much luck. I guess that they have moved on to bigger and better things.
Good luck ducky's