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Whooper swans have a deep honking call that resembles geese and, despite their size, are powerful fliers. Whooper swans can migrate hundreds or even thousands of miles to their wintering sites in southern Europe and eastern Asia. They breed in the subarctic Eurosiberia, further south than Bewicks in the taiga zone.
Whooper swan: Cygnus cygnus: Anatidae: 8,200 metres (27,000 feet) This height was attained by a flock of whooper swans flying over Northern Ireland, and recorded by radar. [2] [5] Alpine chough: Pyrrhocorax graculus: Corvidae: 8,000 metres (26,500 feet) This height was recorded on Mount Everest. [5] Bearded vulture: Gypaetus barbatus: Accipitridae
Original file (3,200 × 2,400 pixels, file size: 6.84 MB, MIME type: image/jpeg) ... English: Whooper Swans Cygnus cygnus, Swallow Pond, Northumberland. Three birds ...
The average egg size (for the mute swan) is 113 × 74 mm (4 + 1 ⁄ 2 x 3 in), weighing 340 g (12 oz), in a clutch size of 4 to 7, and an incubation period of 34–45 days. [27] Swans are highly protective of their nests.
Researchers said the protective effects of nature reserves could see the wintering whooper swan population double by 2030.
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).
Whooper swan, Cygnus cygnus (Linnaeus, ... Many parrots are vividly coloured, and some are multi-coloured. In size they range from 8 cm (3.1 in) to 1 m (3.3 ft) in ...
Whooper swan, Cygnus cygnus; Ruddy shelduck, Tadorna ferruginea; Common shelduck, ... In size they range from 8 cm (3.1 in) to 1 m (3.3 ft) in length. Old World ...