Swan Goose vs Mute Swan
Anser cygnoid comparado com Cygnus olor
Side-by-Side Comparison
| Atributo | Swan Goose | Mute Swan |
|---|---|---|
| Nome científico | Anser cygnoid | Cygnus olor |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Endangered | Least Concern |
| Comprimento | — | 152,0 cm (59.8 in) |
| Envergadura | 84,4 cm (33.2 in) | 235,0 cm (92.5 in) |
| Peso | 3343,75 g (117.95 oz) | 11000,0 g (388.01 oz) |
| Dieta | Herbivore; grazes aquatic plants and grasses at wetland margins; takes invertebrates in spring; diet shifts … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Tamanho da postura | 4-8 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Swan Goose
Breeds on steppe lakes, rivers, and meadows in Mongolia, Siberia, and northeastern China. Winters in eastern China's Yangtze River floodplain and coastal wetlands. Wild populations critically small.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Swan Goose
A deep, resonant 'honk'; less frequently heard than Greylag. The EN status reflects serious population decline; vocalizations are considered similar to Greylag Goose.
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
Swan Goose
Breeds in the tundra and boreal zones of Alaska and Canada; winters on the Pacific coast from British Columbia to California.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Estado de conservação
Swan Goose
Mute Swan
How to Tell Them Apart
Swan Goose
Long neck with rich chestnut hindneck stripe. Forehead and crown dark brown; face and throat whitish. Upperparts grayish-brown; underparts pale. Long black bill. Pink legs. Ancestor of Chinese domestic geese.
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
Swan Goose
O ganso-cisne é um grande ganso do leste da Ásia com um pescoço longo e bico com tubérculo proeminente na base. É o ancestral dos gansos domésticos do leste da Ásia, incluindo o ganso chinês. Em estado selvagem, cria em zonas húmidas de floresta e pradaria na Rússia Oriental, Mongólia e China. Hiberna na China, Japão e Coreia. As populações selvagens são ameaçadas e têm sofrido declínios significativos devido à perda de habitat de hibernação e caça.
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.