The 'scoters' are stocky
seaducks in the
genus '''Melanitta'''. The drakes are mostly black and have swollen bills. Females are brown.
They breed in the far north of
Europe,
Asia and
North America, and
winter further south in
temperate zones of those continents. They form large flocks on suitable coastal waters. These are tightly packed, and the birds tend to take off together.
Their lined nests are built on the ground close to the sea, lakes or rivers, in woodland or tundra. These species dive for crustaceans and molluscs.
There are five
species, grouped into two
subgenera:
★ subgenus ''Oidemia'' (
Black and
Common Scoters)
★ subgenus ''Melanitta'' (
Surf,
Velvet and
White-winged Scoters)
The presumed
fossil "scoter" ''Melanitta ceruttii'' which lived in
California during the Late
Pliocene is now placed in the genus ''
Histrionicus''.