Common Merganser -- It's fun to watch these diving ducks. At one moment I may see a dozen of them floating on the river and then "poof" there is only one still visible. They stay under water a long time. I'm never quite sure where they will reappear.
"Spectacled Eider (Somateria fischeri) is a large species of sea duck native to the coasts of Alaska and Siberia. Like other sea ducks the spectacled eider dives for its meals which usually consist of molluscs and crustaceans.