This is our first time incubating Muscovy duck eggs and we're currently on day 24. The embyos are growing well and look fantastic, but I cant seem to get the air cell to grow. I have tried lowering the humidity.. I didn't get a humidity thermometer until about day 14, realized it was pretty high and got it down to about 55-60% (removing water and opening the other vent plug) since then, but the air cell is staying small. I have lowered it even as low as 25-30% (by taking all the water out) and still the air cell is the same. What can I do!? My kids are SO looking forward to this. We have 5 eggs set to hatch around June 30-July1, and another 4 set to hatch a week later (the air cells all look the same). I am hoping we at least have a few babies for them!