||Greater Scaup Aythya marila
||Dezadeash Lake, Yukon,
The Greater Scaup breeds in the high
latitudes from northern Europe to Siberia and from Alaska across
Canada to the Atlantic coast. It breeds on small lakes and tundra pools.
In the northern winter it migrates southwards along
the Pacific and Atlantic coast of North America, north-western
Europe and China and Japan.
The male has a large rounded head which is black with
a dark green gloss. The eye is yellow. The breast and rear are black while
the flanks are white and the back is light grey with vermiculation. The
bill is pale grey with a black nail.
The female is brown
with a broad white band at the base of the bill.
In flight the
wings show a broad white stripe in both the secondaries and the
primaries. Females can be identified by the dark back, the white at the
base of the bill and the dark flanks just below the wings.
||There is a map showing the distribution in North America at NatureServe and there is additional information available at Avibase.