Quote:
I set temperature to 99.5 and keep relative humidity at 50% during incubation. Two to three days before hatch I increase relative humidity to 65-70%. Be sure to turn the eggs on their side. Waterfowl eggs have much higher hatch rates if turned on their side. If your incubator's auto-turner doesn't achieve this, then turn them by hand. I did open the incubator a several times to add water or candle the eggs. It wasn't an intentional cooling, but obviously the temperature would have dropped during this time. If your temp and humidity have been within the recommended range, then I suspect your low hatch rate has to do with vertical turning. Turn the eggs on their sides!
Great photos of your calls, by the way!