What breed are these ducks?

[MoparGirl89]

I know the yellow ones are fawn and white runners as I ordered them. The black ones were a "awww look ducklings" at tractor supply impulse buy. We have some guesses but now that they are feathering out I wanted to see of anyone could help us figure it out

 

[DucklingLover232]

How old are they? Do you know?

 

[MoparGirl89]

They are 6 weeks old today

How old are they? Do you know?

 

[Gray Farms]

Black Swedish

 

[MoparGirl89]

That was my best guess also.

Black Swedish