I have a duck who has sat on chicken and duck eggs. Should I separate all babies from mother duck? How soon after hatched?

[Moweryj12]

I have a mother duck who has set on chicken and duck eggs. They are starting to hatch. At least 2 chicks have hatched when should I separate them? Immediately after hatching? Should I leave ducklings (if any) with mother duck?

 

[sourland]

Remove the chicks immediately so that the duck hen does not leave the eggs. Yes, leave the ducklings with her.