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Aythya
''Aythya'' is a genus of diving ducks, with twelve species currently accepted. The genus was described in 1822 by the German zoologist Friedrich Boie, with the type species being greater scaup. The name ''Aythya'' comes from the Ancient Greek word (), which referred to an unknown diving-bird. The species are plump, compact, medium-sized ducks ranging from 37–61 cm long, 60–84 cm wingspan, and weighing 410–1600 g, with canvasback the largest, and ring-necked duck and ferruginous duck marginally the smallest. The body plumage is variably white, grey, red-brown, or black, often with a finely vermiculated pattern; in several species, the flanks are white or pale grey, the back darker grey to black, and the breast and tail black. The heads are strongly coloured in the males, orange-red in some species, and black with a green to purple sheen ( structural colour) in good light; the sheen colour varies with both species and angle of light incidence – in for exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aythya Ferina France
''Aythya'' is a genus of diving ducks, with twelve species currently accepted. The genus was described in 1822 by the German zoologist Friedrich Boie, with the type species being greater scaup. The name ''Aythya'' comes from the Ancient Greek word (), which referred to an unknown diving-bird. The species are plump, compact, medium-sized ducks ranging from 37–61 cm long, 60–84 cm wingspan, and weighing 410–1600 g, with canvasback the largest, and ring-necked duck and ferruginous duck marginally the smallest. The body plumage is variably white, grey, red-brown, or black, often with a finely vermiculation, vermiculated pattern; in several species, the flanks are white or pale grey, the back darker grey to black, and the breast and tail black. The heads are strongly coloured in the males, orange-red in some species, and black with a green to purple sheen (structural coloration, structural colour) in good light; the sheen colour varies with both species and angle of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tufted Duck (Aythya Fuligula) (53667828962)
The tufted duck (or tufted pochard) (''Aythya fuligula'') is a small diving duck with a population of nearly one million birds, found in northern Eurasia. They are partially migratory. The scientific name is derived from Ancient Greek , an unidentified seabird mentioned by authors such as Hesychius and Aristotle, and Latin 'soot' and ' 'throat'. It is a game bird. Taxonomy The tufted duck was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae'' under the binomial name ''Anas fuligula''. He cited the Swiss naturalist Conrad Gessner who in 1555 had used the identical name ''Anas fuligula'' in his '' Historiae animalium''. Linnaeus specified the type locality as Europe but in 1761 restricted it to Sweden. The tufted duck is now one of 12 species placed in the genus ''Aythya'' that was introduced in 1822 by the German naturalist Friedrich Boie. The genus name is from Ancient Greek ''aithuia'', an unidentified seabird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Scaup
The greater scaup (''Aythya marila''), just scaup in Europe or, colloquially, "bluebill" in North America, 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. During the winter, it bird migration, migrates south to the coasts of Europe, eastern Asia, and North America. Duck, Drake greater scaup are larger and have more rounded heads than the females; they have a bright blue bill and yellow eyes. Their heads are dark, with a green to purple (depending on light angle) gloss; the breast is black, the belly white, the upperparts pale grey, and the wing shows a strong white stripe. The females are mostly brown, again with white on the wing. They have dull blue bills and a white patch on the face. Greater scaup nest near water, typically on islands in northern lakes or on floating mats of vegetation. They begin breed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Pochard
The common pochard (; ''Aythya ferina''), known simply as pochard in the United Kingdom, is a medium-sized diving duck in the family Anatidae. It is widespread across the Palearctic. It breeds primarily in the steppe regions of Scandinavia and Siberia, and winters further south and west. Taxonomy and systematics Swedish taxonomist Carl Linnaeus first assigned a scientific name to the common pochard in the tenth edition of his landmark treatise Systema Naturae; this was the first edition which included such names. He called the duck ''Anas ferina''. In 1822, German zoologist Friedrich Boie created the genus '' Aythya'' for various diving ducks, and moved the common pochard to that new genus. Uptake of ''Aythya'' as the genus for the common pochard was mixed for much of the next century, with some authors leaving the duck in the genus ''Anas'' or assigning it to various other now-defunct genera instead. The common pochard is considered a superspecies with the canvasback. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redhead (bird)
The redhead (''Aythya americana'') is a medium-sized diving duck. The scientific name is derived from Greek ''aithuia'', an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin ''americana'', of America. The redhead is long with an wingspan; the weight ranges from , with males weighing an average of and females an average of . It belongs to the genus ''Aythya'', together with 11 other described species. The redhead and the common pochard form a sister group which together is sister to the canvasback. This waterfowl is easily distinguished from most other ducks by the male's copper colored head and pale blue bill during the breeding season; from its close relative canvasback it is distinguished by the more rounded head, shorter bill, and (in the males) yellow, not red, eye. The Eurasian common pochard is even more similar, but very rarely overlaps in range; it also differs in having a red eye, and a more acute, less rounded head shape. Othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferruginous Duck
The ferruginous duck (''Aythya nyroca''), also known as ferruginous pochard, common white-eye or white-eyed pochard, is a medium-sized diving duck from Eurosiberia. The scientific name is derived from the Ancient Greek word, (), an unknown seabird mentioned by authors including Hesychius and Aristotle, and the Russian word, (), the Russian word for pochard, which occurs in the bird's Russian common name. Description The breeding male is a rich, dark chestnut on the head, breast and flanks with contrasting pure white undertail coverts. In flight the white belly and underwing patch are visible. The females are duller and browner than the males. The male has a yellow eye and the females have a dark eye. Habitat The ferruginous duck prefers quite shallow fresh waterbodies with rich submerged and floating vegetation with dense stands of emergent vegetation on the margins. In some areas it will use saline or brackish pools or wetlands. On passage and wintering will also frequen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canvasback (male) - Aythya Valisineria, Oakley Street, Cambridge, Maryland
The canvasback (''Aythya valisineria'') is a species of diving duck, the largest found in North America. Taxonomy Scottish-American naturalist Alexander Wilson described the canvasback in 1814. The genus name is derived from Greek ''aithuia'', an unidentified seabird mentioned by authors, including Hesychius and Aristotle. The species name ''valisineria'' comes from the wild celery '' Vallisneria americana'', whose winter buds and rhizomes are the canvasback's preferred food during the nonbreeding period. The celery genus is itself named for seventeenth century Italian botanist Antonio Vallisneri. The duck's common name is based on early European inhabitants of North America's assertion that its back was a canvas-like color. In other languages it is just a ''white-backed duck''; for example in French, ''morillon à dos blanc'', or Spanish, ''pato lomo blanco''. In Mexico it is called ''pato coacoxtle''. Description It ranges from in length and weighs , with a wingspan of . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
