Black Swan vs Red-breasted Merganser
Cygnus atratus comparado com Mergus serrator
Side-by-Side Comparison
| Atributo | Black Swan | Red-breasted Merganser |
|---|---|---|
| Nome científico | Cygnus atratus | Mergus serrator |
| 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) | 46,7 cm (18.4 in) |
| Peso | 6200,0 g (218.70 oz) | 1058,3333333333333 g (37.33 oz) |
| Dieta | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for small fish, crustaceans, and aquatic invertebrates in coastal and freshwater habitats. Pursues fish … |
| Tamanho da postura | 4-6 | 6-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Black Swan only
Nenhum
Red-breasted Merganser only
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
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.
Red-breasted Merganser
Male produces a harsh, rasping series of notes; female gives a rough, guttural grunting. The harsh, rattling call is louder than Goosander; pairs and flocks create a rasping coastal cacophony.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Red-breasted Merganser
Circumpolar breeder in boreal and Arctic zones. Winters on coasts and large water bodies south to the Mediterranean and southern Asia.
Estado de conservação
Black Swan
Red-breasted Merganser
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
Red-breasted Merganser
Male has dark green shaggy double crest, speckled chestnut breast band, white collar, and grey flanks; red bill. Female has rufous-brown head with ragged crest blending gradually into grey neck …
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.
Red-breasted Merganser
O merganso-de-crista é um pato mergulhador de tamanho médio com um topete duplo desgrenhado que lhe dá uma aparência característica. Os machos têm cabeça verde iridescente com o topete desgrenhado, peito ruivo mosqueado e flancos cinzentos. É mais costeiro do que outros mergansos, criando frequentemente em costas marinhas e estuários. Hiberna em costas marinhas ao longo da Europa, Ásia e América do Norte. É amplamente distribuído no Hemisfério Norte.