As I mentioned in a previous post, my white calls began laying last week. Since then I've gather 7 call duck eggs in the past 10 days. So this evening I decided to set them in the incubator, a Brinsea Mini Advance. This will be my first time incubating call duck eggs artificially. I normally give the eggs to my cochin bantam hens to hatch. I really think this is the most reliable method and will result in better hatch rates. Last year, for example, I gave one of my cochin hens 6 call duck eggs to incubate naturally. All 6 of those eggs developed right up to the time of hatch, and then 5 ultimately ended up hatching. That's almost an 85% hatch rate, which isn't bad at all. I know that a lot of people have difficulty hatching call duck eggs. Nonetheless, I wanted to try my hand at artificial incubation of call duck eggs at least once this year. It will be interesting to see what kind of hatch rate I can get with my Brinsea. The temperature is set to 99.5F and I've got relative humidity at 50%. My Brinsea has an auto-turner. Unlike many auto-turners, the eggs set and are turned on their side. I've heard several people mention that they believe that manual turning is best for call duck eggs, but I am skeptical of that: a turned egg is a turned egg regardless if it is done by a person or a machine. I do believe, however, that the vertical egg position of most turners is less ideal than the horizontal position (i.e. the eggs laying on their side). The horizontal egg position imitates nature. And I think that explains why some people have better luck hatching call duck eggs with manual turning. In other words, its not actually the manual turning of the egg but the horizontal egg position that get better hatch results. That's just my opinion though. At any rate, if all goes well, the call duck eggs are scheduled to hatch in 26-27 days from this evening. My Brinsea incubator is pretty much set-n-go, so I don't plan to do much to the eggs until a few days before hatch. I do plan to candle on day 7, then again on day 14 or so. On day 24, auto-turning will automatically stop and I'll increase humidity to around 65%. Obviously, I'll post updates. It will be interesting to see if I can get close to the 85% that my cochin hen got last spring. Wish me luck!