Sadly, the last 5 bantams died in the shell without ever pipping. I hadn't seen any movement or heard any sounds from them, so I candled them tonight and there was no movement at all. Just to be sure I very carefully pipped them. 4 of them were fully formed but the air cells were super small, so I think they maybe couldn't move enough to pip and get out. The 5th one looked like it quit several days ago. So I think maybe I kept too much humidity during the incubation and the air cells didn't shrink enough. I've been reading about the dry incubation, and after this m more inclined to try it. I hope my duck eggs still have plenty of time to lose enough moisture for proper air cell size.
So sorry!! It sucks to lose little ones. What type of duck eggs are they? I run my humidity at 50% for my ducks and its done well.