Last summer when I got some Call eggs I was told that they were difficult to hatch and the ones that I got, were. They all made it to hatch, pipped and then died. I was crushed.
But this winter I have gotten 2 dozen Call eggs. All that made it to hatch date...hatched. All the others have hatched. I don't know if the summer humidity has something to do with it but right now I have 9 ducklings that hatched last week. I had a dozen eggs, 2 weren't fertile and 1 was a quitter.
I also have 7 ducklings that hatched right before Christmas.
I haven't misted the eggs, I haven't cooled them down. I've treated them exactly like I do my chicken eggs, except with higher humidity.
Laurie