Can they hatch?

[Jeepgirl29]

I have mallard call duck that is sitting on a nest of 8 eggs. We candled them tonight and they are all veining. My question is will the eggs hatch if the only drake that I've seen mating her is an appleyard? And if so does anyone know what they would look like

 

[Isaac 0]

If they have veins, that means they are all alive. I've never seen an Appleyard x gray cross, I'd love to see one though. Is her nest in a protected area? Calls are not the best when it comes to survival skills.

 

[Jeepgirl29]

Yes she is in a protected area and was biting us when we candled the eggs. The appleyard is not a call duck that's why I thought maybe they couldn't grow.