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Bewick's swan, Cygnus (columbianus) bewickii is the Eurasian form that migrates from Arctic Russia to western Europe and eastern Asia (China, Korea, Japan) in winter. Whistling swan, Cygnus (columbianus) columbianus is the North American form. North America, Eurasia
The mute swan (Cygnus olor) is a species of swan and a member of the waterfowl family Anatidae. It is native to much of Eurasia , and (as a rare winter visitor) the far north of Africa. It is an introduced species in North America, home to the largest populations outside of its native range, with additional smaller introductions in Australasia ...
The trumpeter swan (Cygnus buccinator) is a species of swan found in North America.The heaviest living bird native to North America, it is also the largest extant species of waterfowl, with a wingspan of 185 to 304.8 cm (6 ft 2 in to 10 ft 2 in).
The black swan (Cygnus atratus) is a large waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is nomadic, with erratic migration patterns dependent on climatic conditions. It is a large bird with black plumage and a red bill.
The case, which became known as the "Black Swan murder" trial, garnered national attention, with some comparing Benefield to the protagonist of the 2010 film "Black Swan."
The whooper swan (/ˈhuːpə(ɹ) swɒn/ "hooper swan"; Cygnus cygnus), also known as the common swan, is a large northern hemisphere swan. It is the Eurasian counterpart of the North American trumpeter swan , and the type species for the genus Cygnus .
The tundra swan (Cygnus columbianus) is a small swan of the Holarctic. The two taxa within it are usually regarded as conspecific , but are also sometimes [ 3 ] [ 4 ] split into two species : Bewick's swan ( Cygnus bewickii ) of the Palaearctic and the whistling swan ( C. columbianus ) proper of the Nearctic .
The black-necked swan is the only member of its genus that breeds in the neotropics and is the largest waterfowl native to South America. Adults are 102 to 124 cm (40 to 49 in) long with a wingspan of 135 to 177 cm (53 to 70 in).