Black Swan vs Upland Goose
Cygnus atratus comparado com Chloephaga picta
Side-by-Side Comparison
| Atributo | Black Swan | Upland Goose |
|---|---|---|
| Nome científico | Cygnus atratus | Chloephaga picta |
| 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) | 82,4 cm (32.4 in) |
| Peso | 6200,0 g (218.70 oz) | 2916,0 g (102.86 oz) |
| Dieta | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | -- |
| Tamanho da postura | 4-6 | 5-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Upland Goose
Open Patagonian grasslands, steppe, and agricultural pastures in southern Chile and Argentina, including the Falkland Islands. Grazes on short grass. Males aggressively defend territories. Partially migratory.
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.
Upland Goose
Male gives a high, whistled 'whew'; female gives a low, rolling cackle 'ga-ga-ga'. Sexual differences in call are pronounced. Falklands and Patagonian populations highly vocal.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Upland Goose
Estado de conservação
Black Swan
Upland Goose
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
Upland Goose
Pronounced dimorphism. Males white with black-barred flanks and white wings with black primaries. Females rufous-brown with black-barred flanks and white belly. Both sexes yellow-orange legs. Grassland species.
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.
Upland Goose
O ganso-magelânico é um ganso dimórfico dos prados e pastagens da patagónia e Terra do Fogo. Existem diferenças marcantes entre os sexos: os machos são brancos com barras escuras, enquanto as fêmeas são castanhas com barras escuras. É altamente territorial e forrage em pastagens. Ao contrário de muitos gansos, os pares mantêm laços permanentes ao longo de muitos anos. É muitas vezes visto nos cruzeiros da Antártica perto das costas do sul da Argentina e Chile.