Michael D. wrote -

<<<Well, it was definately not a Shoveler...The bill wasn't spoon
shaped.
In addition, neither female Shoveler nor Gadwall, have gray bills, nor
have I seen either dive before>>>

Mallards can indeed dive. I watched about 7 or 8 of them diving near the
pier on the Kelowna, BC waterfront many years ago. Mind you, their
greater buoyancy compared to a diving duck means they have to fight for
every inch below the surface, but they can do it. It's a wonder they
didn't get the bends coming back up 'cuz they shot up like little
champagne corks!

Another dabbler that routinely has a grayish bill is a male pintail but
body shape gives them away, even if it is full eclipse. Eclipse ducks
can be quite the mystery.

--
Jack Bowling
Prince George, BC
jbowling at direct.ca