Common Goldeneye

Otherwise, and maybe in a more proper way, known as Bucephala clangula. These two have paired up on Muir Lake just north of Spruce Grove, Alberta. These are the ducks that you hear whistling as they fly past you. Actually it's the wind whistling through their wing feathers. Many years ago, my brother and I were walking over a bridge in the dark and heard this whistling sound getting closer and closer and not being able to see anything assumed we were in for a "Close Encounter" only to see a few of these ducks flying low over the water beneath the bridge. Our hearts went back to normal, but I haven't forgot the incident!
[Nikon F3, 600mm, Fuji Provia 100]