On March 3rd at our local livestock auctions, I purchased a batch of 12 fertilised Indian Runner Duck eggs. 15 days into incubating them in my Janoel, I candled the eggs to find 4 were complete fails and I had 8 viable eggs. Duck eggs take 28 days to hatch according to all information sources. My incubator has ticked over to Day 29 from the day I put the eggs into the incubator. TWO have started hatching, but in a 12 hour period, they've only successfully managed to make a hole big enough to push their beaks through... I first noticed that they were hatching at about 5am, its now 9:48pm and the progress hasn't been a lot. I don't know how normal or not normal this is, as I've never hatched ducklings before, only chickens. Am I supposed to HELP them or something?? Now, as for the other 6 eggs? I can't hear any peeping from them, no tapping, they're quiet as the grave in there... How much longer should I give them before I just cut my losses?