Ducklings have their own timetable just because on the calender it's day 28 doesn't mean it is for them, Have you candled? best way to tell what maybe going on. Pick up each egg and smell it too. but I'd dif candle.Help Today is hatch day for my ducks I'm worried that they are dead two days ago they where moving nothing today and Now some of the eggshells are stained black, looking like something that has a water stain so are they dead or should I wait Oh I did have two ducks hatch out two days ago and doing good