Help me ID this duckling, please

[njgaripoli]

My hubby got me these two ducklings and I am pretty sure from my research the little one is a Rouen but he bigger one I am not to sure. I was in the market at first to purchase a Khaki Campbell so the ducklings of that variety that I have seen were all much darker. This one is different. It has a large yellowish chest and a small crest. It is very outgoing and much taller than the other. Any ideas, I have done so much photo and breed browsing and I just can't be sure. The place they came from had a mix of ducklings so they couldn't be sure either. THANKS EVERYONE!

 

[happyhens44]

the one with the more black is a mallard

 

[chasing ducks]

The little one is likely a mallard, looks small for a rouen. The other, I haven't seen a duckling like that before, maybe a cross breed of rouen or mallard? Looking at the pic again maybe it is crossed witha crested runner, being that it is taller and has a tuft.

 

[1lpoock]

The little one has two eye stripes so I say rouen...the silverish one is a blue swedish with a tiny crest!

 

[Birdgirl]

the little guy could be a grey mallard but his feet are making me wonder, the bigger guy is a crested swedish, maybe a blue?