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The greater scaup (Aythya marila), just scaup in Europe or, colloquially, "bluebill" in North America, [3] is a mid-sized diving duck, larger than the closely related lesser scaup and tufted duck. It spends the summer months breeding in Iceland , east across Scandinavia , northern Russia and Siberia , Alaska , and northern Canada .
Other high counts of wildfowl that year included 221 whooper swan, 2,457 Northern pintail, 3,000 Eurasian teal, 1,230 Eurasian wigeon and 150 greater scaup. These numbers attract raptors such as peregrine falcon, common buzzard and hen harrier.
These are gregarious ducks, mainly found on fresh water or on estuaries, though the greater scaup becomes marine during the northern winter. They are strong fliers; their broad, blunt-tipped wings require faster wing-beats than those of many ducks and they take off with some difficulty.
Lesser scaup are often hard to distinguish from the greater scaup when direct comparison is not possible, but in North America a large scaup flock will often have both species present. Females, juveniles and drakes in eclipse plumage are hard to identify; there is considerable overlap in length between the two species, but greater scaup are ...
The bird flu outbreak was found on a farm of 54,207 laying hens aged between 23 and 30 weeks kept in a high biosecurity facility, the Paris-based body said, quoting information from Mozambique's ...
Scaup is the common name for three species of diving duck: Greater scaup, or just "scaup", Aythya marila; Lesser scaup, Aythya affinis;
Greater scaup: Iceland, Northern Europe, Northern Asia except the Far East (A. m. marila); far northeastern Asia, Alaska, northern Canada (A. m. nearctica) least concern A. affinis: Lesser scaup: Alaska through western Canada to western Montana, wintering east to the Atlantic Coast and south to Central America; occasional visitor to Western Europe
Overwintering species include common loon, American coot, greater scaup, lesser scaup, northern shoveler, mallard, common goldeneye, canvasback, common merganser, hooded merganser and red-breasted merganser. The use of this area by waterfowl in winter is influenced by the extent of ice cover on Premium Mill Pond.