Figuring out mixed duck breed (half Black Swedish or Welsh Harlequin)

[Macjjo]

So my Saxony female had hatched a batch of ducklings, and we were sure they are Welsh Harlequin x Saxony mixes, but looking again, I’m not too sure. There is a Black Swedish who may have wormed his way into the pen, which makes me beg the question.
What do you guys think?
Parents and possible parent are pictured

 

[cheezenkwackers]

Yes, they look like blue Swedish. It would seem the black Swedish came a calling.

 

[Galaxyfalcon]

Those look like adorable blue swedish to me! Adorable.

 

[KKicons]

Really pretty cross, maybe OP can repeat that happy accident. Would love an update when they are big. Blue Swedish really lay well for me in all seasons and are meaty too.