Tundra Swan vs Mute Swan
Cygnus columbianus comparado com Cygnus olor
Side-by-Side Comparison
| Atributo | Tundra Swan | Mute Swan |
|---|---|---|
| Nome científico | Cygnus columbianus | Cygnus olor |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | 152,0 cm (59.8 in) |
| Envergadura | 107,6 cm (42.4 in) | 235,0 cm (92.5 in) |
| Peso | 6675,0 g (235.45 oz) | 11000,0 g (388.01 oz) |
| Dieta | Eats seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; diet becomes more invertebrate-heavy in … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Tamanho da postura | 3-6 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Tundra Swan
Breeds on Arctic tundra ponds and lakes in Alaska, Canada, and Siberia. Winters on coastal estuaries, shallow bays, agricultural fields, and freshwater lakes in North America, Europe, and eastern Asia.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Tundra Swan
A high, bugling 'who-who-who' with a musical quality. North American subspecies (Whistling Swan) produces a higher-pitched call than European Bewick's Swan (Cygnus c. bewickii).
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Tundra Swan
Breeds in the northern Great Plains; winters along the Gulf Coast from Texas to Florida. Uses the Central and Mississippi flyways.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Estado de conservação
Tundra Swan
Mute Swan
How to Tell Them Apart
Tundra Swan
All-white plumage; bill black with small yellow patch at base near eye. Neck shorter and rounder-headed than Trumpeter Swan. Juveniles grayish-brown. Bewick's race has more extensive yellow on bill.
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Tundra Swan
O cisne-de-bewick é um cisne branco médio com distribuição circumolar ártica. Criando na tundra ártica, hiberna em Europa Ocidental, sul da Ásia e leste da Ásia. Pode ser distinguido do cisne-cantor pelos padrões variáveis de amarelo e preto no bico, que são únicos para cada indivíduo como impressões digitais. As populações migrantes da Europa Ocidental criaram ao longo das costas da Grã-Bretanha e Países Baixos. É classificado como espécie distinta por algumas autoridades.
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.