I went put my duck eggs in lock down on day 25. (last night) I candled them on the way into the hatcher and one had already internally pipped. How long from internal pip to external pip can they go without an external pip?
I Also Put Mine On Lockdown Last Night,I Didn't Candle Any Of Mine.It Usually Takes 12-24 Hours To Complete Hatching From Pip To Zip And Then Out.Waterfowl Are Slow To Hatch....