Black Swan vs Spur-winged Goose
Cygnus atratus в сравнении с Plectropterus gambensis
Side-by-Side Comparison
| Характеристика | Black Swan | Spur-winged Goose |
|---|---|---|
| Научное название | Cygnus atratus | Plectropterus gambensis |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | 130,0 cm (51.2 in) | — |
| Размах крыльев | 190,0 cm (74.8 in) | 104,5 cm (41.1 in) |
| Масса | 6200,0 g (218.70 oz) | 4475,0 g (157.85 oz) |
| Питание | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats seeds, invertebrates, and aquatic plants; dabbles in shallow water; omnivorous diet shifts with breeding … |
| Размер кладки | 4-6 | 6-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Spur-winged Goose
Freshwater lakes, marshes, rivers, and flooded grasslands across sub-Saharan Africa from the Sahel to South Africa. Feeds along wetland margins and on agricultural land near water. Nests on the ground.
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.
Spur-winged Goose
A harsh, goose-like clucking 'uk-uk-uk' in flight. Males give a whistling hiss. Large and ungainly; its loud wing beats and harsh calls are characteristic of savanna wetlands.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Spur-winged Goose
Breeds across Alaska and Canada in wetlands; winters along the Pacific coast from the Aleutians to Baja California.
Охранный статус
Black Swan
Spur-winged 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
Spur-winged Goose
Large; black upperparts with glossy green and purple iridescence. White forehead patch, facial skin reddish, and white underparts. Males have larger red facial caruncle and bill knob than females. Spur …
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.
Spur-winged Goose
Africa's largest waterfowl, a massive goose-like bird with iridescent black-and-white plumage, a large red bill knob, bare red facial skin, and prominent bony wing spurs. Males can weigh up to 10 kg. Territorial; feeds on aquatic vegetation and agricultural crops across sub-Saharan Africa.