ducks laying eggs

[CASEYPIETRO]

I just need help so recently my ducks started laying again and im thinking that theyre fertile because.i see them mating all the time. Im curious why arent they sitting on the eggs? Do they know if it is fertile or do they just never sit on there eggs

 

[Amiga]

Many domestic ducks don't have that broody instinct.

 

[Going Quackers]

Many domestic ducks don't have that broody instinct.

Definitely an issue, unfortunately. What breed are they?

 

[CASEYPIETRO]

Female Pekin, male Crested Blue Swedish, and female Black Magpie