Black Swan vs Águia-rabalva
Cygnus atratus comparado com Haliaeetus albicilla
Side-by-Side Comparison
| Atributo | Black Swan | Águia-rabalva |
|---|---|---|
| Nome científico | Cygnus atratus | Haliaeetus albicilla |
| Ordem | Anseriformes | Accipitriformes |
| Família | Anatidae | Accipitridae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 130,0 cm (51.2 in) | 84,0 cm (33.1 in) |
| Envergadura | 190,0 cm (74.8 in) | 225,0 cm (88.6 in) |
| Peso | 6200,0 g (218.70 oz) | 5200,0 g (183.42 oz) |
| Dieta | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Fish, waterfowl, and carrion. Often pirates food from other birds. Takes fish from the water … |
| Tamanho da postura | 4-6 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Águia-rabalva
Coastlines, large lakes, and rivers with mature trees or cliffs for nesting. Requires large undisturbed areas.
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.
Águia-rabalva
High-pitched, yelping 'klee-klee' and deep barking 'ra-ra-ra'. Less vocal than Bald Eagle but similar chattering quality. Gives gull-like wailing near nest in breeding season.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Águia-rabalva
Northern Europe and Asia from Greenland and Scandinavia to Japan. Reintroduced to Scotland and Ireland.
Estado de conservação
Black Swan
Águia-rabalva
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
Águia-rabalva
Brown body with a paler head in adults and a distinctive short white wedge-shaped tail. Massive broad wings in flight. Juveniles are darker overall.
Very large, heavy, pale yellow bill
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.
Águia-rabalva
The white-tailed eagle is Europe's largest eagle and the fourth-largest eagle in the world. Once extinct in Britain, it has been successfully reintroduced to Scotland and Ireland through conservation programs. These powerful raptors can live over 25 years and form lifelong pair bonds.