What Bird Is That Forum

Last one today I promise. A couple miscellaneous waterfowl from the past few weeks (Avon, CO still). I'm thinking cinnamon teal and ring-necked duck on some of them? Thanks

#3 & #5 look like Green-winged Teal. Agree with others.

Ring-necked, Ring-necked, Green-winged Teal, Cinnamon Teal, Green-winged Teal.