Pekins are not known to be a broody type as they are bred more for production. And when they do sit, they often tend to give up early on.How broody are Ancona ducks? I've got three Pekins, and I've never gotten them to set on the eggs (I'll be putting some in the incubator later this week). Every once in a while, I'll get one of my Buff Orpington hens to do what mama hens are supposed to do, but it's rare. How common - or uncommon - is it for Anconas to hatch out a brood and raise them? Yes, it's easy to just stick the eggs in the incubator, but what I really want is ducks that will hatch out their own eggs and raise the ducklings.
Anconas (especially if you get from a breeder that breeds for the broody trait) can be very good broody ducks and very good mothers. Generally if you let them start a nest (be sure its in a safe place where it will be undisturbed), they will wait until they have their desired number of eggs (3 to 20, it depends on the duck) and then sit on them.