What kind of ducks are these?

[22lilchickens]

I bought two ducklings from tractor supply and I've never seen some like this and I have almost every single breed can some tell me what they are ?

I also bought a khaki Campbell ducking when I bought them and they are small campared to her

 

[Pyxis]

I think they are welsh harlequins, or possibly silver appleyards. Welsh harlequin is more likely because appleyards are a large breed.

 

[Amiga]

My first impression was Welsh Harlequin.

 

[22lilchickens]

I hope so I've always wanted some, there beautiful but I think I have two hens.