Since Muscovy Ducks take 35 days to hatch it may take longer to see any results in those eggs. Sometimes the incubator can be off too and it will take even longer than that for them to hatch. Good luck with your eggs. I love my Muscovy Ducks!!!There's one thing that confuses me, though. They all seem to be behind. This one is on day 7, but it looks like it's on day 4 or 5.