Oh, so the hen is the lilac? I misread, lol. In that case, I'm gonna guess dad was one of the blue fawns carrying chocolate, or the blue bib if he might be carrying chocolate.
This one I think is lavender - which is silver plus chocolate. It would make sense if the father was lilac. Mom must be something blue or silver.
This one is Nutmeg - aka chocolate mallard.
Black is dominant :) So the ducklings will be all black bibbed. Well, as long as the black bibbed has two copies of extended black. If it only has one, there could be surprises :)
Chocolate bibbed, perhaps :)
Sounds an awful lot like Dusky to me. Unless mom was also dusky or carrying dusky, then you would never get any Dusky babies. But the babies would be split for it themselves.
Is he dusky? Seems to be lacking the throat ring and much of the claret breast.
Maybe Restricted Mallard? It's hard to say. If the drake is dusky, it wouldn't be coming from him, because it's at the same locus as Dusky. But, it IS a dominant gene, so one copy is all it takes, so it could come...