Candling ducks and some seem bigger than others

[jimlas]

I have 5 Runner duck eggs due to hatch around the 22nd of this month. When I candle them it seems like a couple are bigger and some are smaller. Is this normal and do they all tend to hatch at the same time? I set them all up in the incubator at the same time as well.
Thanks, Wendy

 

[Ms T]

I was wondering the same thing. I have 10 duck eggs that are on day 19 of incubation and I am noticing the same thing and all mine were set at the same time.

 

[mstricer]

I tried hatching duck eggs with no luck. I just am letting my call duck hatch her own. Seems to be working better she knows what they need.