The blue one is a blue swedish (most likely), even though she has a lot of white on her the hatchery swedish ducks don't usually have the crisp bib. They tend to have random white patches that are too big, too small, and even cover more than they should (like this one). But it doesn't matter unless you want to breed or show 
And the one you say is a mallard, I agree that its a rouen drake. They are colored and patterned very similarly to the mallards, only they are 2-3 times the size.

And the one you say is a mallard, I agree that its a rouen drake. They are colored and patterned very similarly to the mallards, only they are 2-3 times the size.
