Black Swan vs West Indian Whistling-duck
Cygnus atratus comparado com Dendrocygna arborea
Side-by-Side Comparison
| Atributo | Black Swan | West Indian Whistling-duck |
|---|---|---|
| Nome científico | Cygnus atratus | Dendrocygna arborea |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Near Threatened |
| Comprimento | 130,0 cm (51.2 in) | — |
| Envergadura | 190,0 cm (74.8 in) | 51,3 cm (20.2 in) |
| Peso | 6200,0 g (218.70 oz) | 1030,0 g (36.33 oz) |
| Dieta | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats grasses, sedges, and grains; migratory goose foraging in Arctic tundra in summer; overwinters on … |
| Tamanho da postura | 4-6 | 4-16 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Black Swan only
Nenhum
West Indian Whistling-duck only
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
West Indian Whistling-duck
Freshwater lakes, mangrove swamps, palm savannas, and forested wetlands in the Greater and Lesser Antilles. Nests in palm crowns and hollow trees. Highly dependent on Caribbean wet forests and freshwater lagoons.
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.
West Indian Whistling-duck
A loud, 3-syllable whistle 'whee-whee-whee'. The NT conservation status reflects population pressures. Less commonly heard than its more abundant whistling-duck relatives.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
West Indian Whistling-duck
Found in grassy wetlands and floodplains of Madagascar. Non-migratory and endemic to the island's eastern marshes.
Estado de conservação
Black Swan
West Indian Whistling-duck
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
West Indian Whistling-duck
Dark brown upperparts; head and neck dark with pale sides. Flanks black with bold white spots. Breast dark brown; belly blackish with white flank streaks. Long dark legs. Largest Dendrocygna. …
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.
West Indian Whistling-duck
O parreco-cubano é um pato assobiadeiro grande encontrado nas Antilhas, principalmente Cuba, Jamaica, Hispaniola e ilhas adjacentes. Tem coloração escura com ventre e flancos fortemente malhados de branco. Habita zonas húmidas costeiras, manguezais e lagoas de interior. É o maior pato assobiadeiro. Está classificado como vulnerável devido à perda de habitat e caça. Como outros parrecos, empoleira-se em árvores e é mais ativo ao anoitecer e ao amanhecer.