I started with 2 dozen shipped duck eggs, put in some chicken eggs a week later. I had 4 chickens hatch last week. The rest.. shipped eggs, sometimes it happens. Weeded out the dud duck eggs and the ones that died along the way. I was left with about half when it came down to the wire. Nothing hatched. I candled a final time after a few days just to be sure I wasn't discarding something good and could see movement in one. He was just breaching the air cell. I put all the dark inside eggs back and got the humidity back up. Nothing happened for 2 days and then I noticed a pip. Was really staring inside thinking it was composter time for the eggs. A duck finally hatched. I left in there for nearly 2 days. Nothing happening with the others. Figured I leave the bator going two more days just in case. Next day towards bedtime I noticed another pip. Another duck has made it. I now have another one just starting this morning. I have never had a hatch so maddeningly slow! Any ideas what gives? Incubator is a 1588 or maybe a 1590. Tag has worn off and I don't remember. Big picture window with preset thermostat. Temps and humidity are fine. Been running it a tad moist now that the chicken eggs are out. Are ducks always this staggered? I've only hatched a few before this. I'm slowly going insane with the waiting. Just when I think it's over I see another start. By rights this hatch should have been compost last week even giving a few extra days for slowpokes. Not complaining. I need ducks. My whole flock was wiped out by a mink earlier this spring. A flock of 12 made a noticeable dent in the biting bugs last year.