The Redhead is one of seven North American members of the genus Aythya, from the Greek aithuia, a kind of diving bird.

The White-winged Scoter is one of the world’s three scoters, all of which are seen in winter along the Washington coast.  They are all in the genus Melanitta from the Greek melas, black, and netta, a duck.  Heinrich Boie (1794-1827) Latinized the Greek word for duck and misspelled it.  However, the principle of priority allows the error to stand

The Common Merganser (COME) is about 25” long with  34” wingspan and weighs 3.4 lb (1530 g). The genus name Mergus is Latin for diver. The species name merganser is from Latin mergere meaning to dip, plunge, and anser meaning goose. It is called Common because it may be seen more often than other members of its genus.

The Green-winged Teal (GWTE) is about 14” long with a wingspan of 23” and a weight of 12 oz. (350g). The genus name Anas (AY-nas) is Latin for duck. The species name crecca (CREK-ah) is a Latinized onomatopoetic word to express the quack or creak note of this duck.

The Ring-necked Duck (RNDU) is 16-18". The brownish ring on the neck is barely visible. A bold white ring around the bill is a distinguishing feature.

The Oldsquaw, aptly named “Long-tailed Duck”, breeds in the Arctic tundra, but is most frequently observed along both North American coasts during the winter.  It is a medium sized duck, 16-21” in length.  The four letter code is OLDS.

A medium sized duck, about 19” in length.  The four letter code is AMWI.  It is one of the most abundant and conspicuous wintering ducks along the Pacific Coast.

The Greater Scaup (GRSC) is about 18” long while the Lesser Scaup (LESC) is a little smaller at about 17”. The genus name Aythya (AY-thih-ah) is from the Greek aithya, a seabird. Other ducks in the same genus are Canvasback, Redhead, Tufted and Ring-necked Ducks.