Well my 4 call duck eggs are in the hatcher. Humidity is at 80% in there - or it will be once it recovers from being opened. This is day 23 . So here is my OOPS moment: I bought a Genesis a few weeks ago to make my primary incubator and I set it up and switched my eggs and the turner over from the still air. I then noticed that I was unable to accurately moniter temps in the still air because I had no eggs in there anymore to rest the thermometer on. So I figured I'd put in some clear eggs that I hadn't had the chance to get rid of yet. Yes, you guessed it. I candled those eggs when I took them out tonight and one is fertile and growing. Only problem is that it hasn't been turned for a week, or basically almost the whole time it's been in incubation, not to mention there were a few days there that it ran out of water completely, so basically zero % humidity as we don't do humid here in Colorado. I don't know if it will hatch - but I stuck it in the Genesis with the others to give it a try. Its a high quality white runner. Live and learn.