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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 ...
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]
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Scaup is the common name for three species of diving duck: Greater scaup, or just "scaup", Aythya marila; Lesser scaup, Aythya affinis;
The Greater Scaup is 20 per cent heavier and 10 per cent longer than the closely related Lesser Scaup], Sentence order, this "breaks" into the middle of your dialog on male characteristics. I moved the sentence in question to before the description of the drake, so it is now right after wingspan and weight sentence.--
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 ...