Mute Swan vs Blue-billed Duck
Cygnus olor comparado com Oxyura australis
Side-by-Side Comparison
| Atributo | Mute Swan | Blue-billed Duck |
|---|---|---|
| Nome científico | Cygnus olor | Oxyura australis |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 152,0 cm (59.8 in) | — |
| Envergadura | 235,0 cm (92.5 in) | 30,8 cm (12.1 in) |
| Peso | 11000,0 g (388.01 oz) | 837,75 g (29.55 oz) |
| Dieta | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Dives for aquatic invertebrates, seeds, and plant material in Australian freshwater lakes and swamps. Highly … |
| Tamanho da postura | 5-7 | 5-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Blue-billed Duck
Male produces a mechanical, splashing display call with loud bill-drumming; female gives a harsh quack. The male's bizarre bubbling-cum-drumming display is spectacular on Australian lakes.
Geographic Range & Migration
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Blue-billed Duck
Resident in southwestern and southeastern Australia. Found on freshwater swamps and lakes, avoiding arid and tropical regions.
Estado de conservação
Mute Swan
Blue-billed Duck
How to Tell Them Apart
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
Blue-billed Duck
Breeding male is deep rich chestnut with black head and broad bright blue bill; tail often held erect. Female is dark brown with finely barred buff pattern on body and …
About These Birds
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.
Blue-billed Duck
O pato-azul australiano é um pequeno pato de cauda rígida endémico do sul e este da Austrália. Os machos têm cabeça preta escura, bico azul brilhante e corpo castanho-avermelhado. Habita lagos e pântanos de água doce com vegetação emergente densa. É um mergulhador talentoso e move-se com dificuldade em terra. É considerado vulnerável em algumas partes do seu alcance devido à perda de habitat. A qualidade e disponibilidade das zonas húmidas são críticas para a sua sobrevivência.