Black Swan vs Coscoroba Swan
Cygnus atratus comparado com Coscoroba coscoroba
Side-by-Side Comparison
| Atributo | Black Swan | Coscoroba Swan |
|---|---|---|
| Nome científico | Cygnus atratus | Coscoroba coscoroba |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 130,0 cm (51.2 in) | — |
| Envergadura | 190,0 cm (74.8 in) | 84,2 cm (33.1 in) |
| Peso | 6200,0 g (218.70 oz) | 4200,0 g (148.15 oz) |
| Dieta | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats seeds, aquatic plants, and invertebrates; dabbles and upends in shallow water; diet more invertebrate-heavy … |
| Tamanho da postura | 4-6 | 4-9 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Coscoroba Swan
Freshwater lakes, marshes, lagoons, and flooded grasslands from southern Brazil through Uruguay, Chile, and Argentina to Tierra del Fuego. Partially migratory; moves northward in winter. Nests in reedy margins.
Song & Call Comparison
Black Swan
Gives a musical bugling 'boo-boo-boo' in flight and softer honking on water. Less vocal than Mute Swan; produces a baying call when alarmed. Wings whistle softly in flight.
Coscoroba Swan
A bugling, honking 'coscoroba' call — giving the species its onomatopoeic name. Loud and far-carrying. Less commonly heard than northern hemisphere swans.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Coscoroba Swan
Breeds in western North American prairies and parklands; winters in California, the Southwest, and northern Mexico.
Estado de conservação
Black Swan
Coscoroba Swan
How to Tell Them Apart
Black Swan
Almost entirely black with white flight feathers visible in flight. Red bill with a white band near the tip. Dark red to reddish-brown iris.
Bright red bill with a pale tip and prominent white band
Coscoroba Swan
Entirely white plumage except black wingtips visible in flight. Bright red bill and red legs and feet. Red eye-ring. More goose-like than true swans. Juvenile has brownish wash. Sexes similar.
About These Birds
Black Swan
The black swan was once considered impossible by Europeans who believed all swans were white, making it a famous philosophical example of inductive reasoning failure. It is the state emblem of Western Australia. Black swans form lifelong pair bonds and both parents share in incubation and care of cygnets.
Coscoroba Swan
O cisne-coscoroba é um cisne incomum da América do Sul, o único membro do seu género. Ao contrário dos verdadeiros cisnes, não tem pescoço tão longo e assemelha-se mais a um ganso grande. Tem plumagem branca com pontas das asas pretas e bico e pernas vermelhas. Cria em zonas húmidas da Patagónia, Terra do Fogo e adjacentes e hiberna no norte da Argentina, Uruguai e sul do Brasil. O seu apelo sonoro é o nome 'cos-cor-o-ba' que lhe deu o …