Ducks in Minnesota, USA, early September (1 Viewer)

[bost85]

I was at the Minnesota State Fair a couple weeks ago and the DNR had a pond with several duck species that live in Minnesota (don't worry, they were free to fly away anytime they wished, I think). I was puzzled by these two ducks. Is the duck in the first two a Gadwall? I have no idea for #3 and #4. I was just curious as they were ducks I'm not familiar with. Thanks!

 

[Andrew Whitehouse]

The first is a Pintail. The second is a Scaup. I'd suggest it's a Greater but I'm not totally certain.

 

[Jan-Paul Charteris]

The Scaup is juvenile obviously given eye colour and darkness of bill, would probably lean towards Greater too on the broad based bill especially - hard to assess head shape in these photos because of the birds pose

 

[bost85]

Would the lack of contrast between the head and breast make you lean towards Lesser Scaup?