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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 .
This will help protect endangered birds, contribute to a better understanding of poultry physiology and embryonic development, and provide technical methods for poultry transgenic. [26] Hybrid ducks of the genus Aythya include birds that are a mixture of tufted duck, greater scaup, pochard, ferruginous duck and ring-necked duck. List of duck ...
Scaup is the common name for three species of diving duck: Greater scaup, or just "scaup", Aythya marila; Lesser scaup, Aythya affinis;
8.1 (46.6) 3.6 (38.5) 0.0 (32.0) −1.4 ... whilst the second most abundant species is the greater scaup with 1,500 pairs. ... destroying two farms. The Mývatnseldar ...
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.
The only ducks which are similar are the greater scaup and lesser scaup, but these species have no tuft and a different call. The tufted duck is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds applies. [11] Refer to the following table for measurements of the tufted duck: [12]
Hens give the namesake discordant scaup, scaup call; in courtship drakes produce weak whistles. Hens vocalize more often than those of the greater scaup—particularly during flight—but their call is weaker, a guttural brrtt, brrtt. [2] [7] [8]
The greater prairie-chicken or pinnated grouse (Tympanuchus cupido), sometimes called a boomer, [2] is a large bird in the grouse family. This North American species was once abundant, but has become extremely rare and extirpated over much of its range due to habitat loss . [ 2 ]