Harlequin Duck, Glacier National Park.

The Harlequin Duck is a sea duck about the same size as the much more common Wood Duck seen over most of the US.  It spends its non-breeding time on rocks in heavy surf on the coast of NW North America.  It breeds inland along fast-moving streams in the Pacific northwest all the way to northern Alaska. Thanks to Mary, whose eagle eyes (bird pun here) from the tandem at 30MPH saw this pair on a rock in the McDonald Creek, I got a new life bird. Oh yeah. I highly recommend the LUMIX DMC FX-70. It's pretty hard to hold still at 1200 zoom, but takes amazing photos.