My first time hatching a duck egg. I know ducks take 28 days to hatch and today is day 28. So far nothing is happening. I placed this egg in the bator at the same time as my chicken eggs. They all hatched on time last weekend. So, what's the longest I should wait? It's not that I mind waiting it's just that the bator is getting smelly from the left over chick shells. Next time I'll make sure duck goes in a week before chicken. Not the other way around. Thanks