Khaki Campbell duck nesting

[stace91]

Hi
Do you think this egg is fertile? If yes how long do you think till it hatches? My duck is sitting on her eggs for the first time and I haven't keep track on how long ago she laid them etc.
Thanks

 

[Chickies2020]

It doesnt matter much when it was laid as much as when she started sitting. Chickens and ducks have all their eggs hatch around the same time by only sitting on a full clutch (ie: a 5 day old egg will hatch the same day-ish as a 1 day old egg, provided she begins sitting on them perpetually at the same time).

I dont see any development yet but you can check again in 5-6 days for veining. Campbells take about 28 days to hatch after mom starts sitting on them.