i have never had trouble hatching ducklings. knock on wood. i incubate everything the same way. adding too much water to the bator throughout the entire incubation process can cause the embryos to stay a little chubby because of improper evaporation of the egg. chubby embryos can have trouble turning inside the egg, therefore zipping the egg after pipping can be tough if they cannot turn. i used to have a problem with eggs pipping and then dying. thats when i started dry hatching. no problems anymore. another thing is, waterfowl just simply seems to take longer to hatch. i have had a few that took 48 hrs from pip to out.
