Confused: hatching

[sabsandtheflock]

So I put my duck eggs (khaki campbells) into the bator at around 5/17 5/18 and 5/19. But I noticed last night that one of them has popped 6 days early? And it looks like one or two more might be in the air cell as well. I'm just really confused. Could they have been sat on and I didn't realize so they were further along than I though?

 

[sourland]

By my calculations, the earliest eggs are on day 27 which would put them right on schedule - 28 days being the incubation period for mallard derived breeds.

 

[Orca5094]

Yeah, they seem right on schedule to me as well. Like sourland said, 28 days is the average incubation period for khaki cambells, so they are ready to hatch now. No worries!