I shot one west of edmonton a few years ago on a small creek near Wabamun lake.....
It was a dream of mine for many years, and i was prepared to travel to states to get a chance at one. Very cool that i managed to track one down in Alberta. And a fully plumed drake none the less......good luck in your search.
Come to think of it a client of ours managed to shoot one over a shallow pond in a pea field a few years ago.