New ducklings!!

[ClaudiaKat]

So over the past two weekends I have acquired more ducklings, which now means I have a total of 5 ducks. (Yay!) The most recent one is the smallest, and I need some help figuring out her breed. I think I know the others but feel free to correct me if I'm wrong.

Left to right: Rouen, Unknown/Buff, Crested Cayuga?

That's my guess as far as breeds go.
What do you all think??
I have more pictures if needed.

 

[Kevin565]

I believe you're correct on the rouen one. The black one could end up being a black crested runner.