Yellow-billed Teal vs Black Swan
Anas flavirostris مقارنةً بـ Cygnus atratus
Side-by-Side Comparison
| السمة | Yellow-billed Teal | Black Swan |
|---|---|---|
| الاسم العلمي | Anas flavirostris | Cygnus atratus |
| الرتبة | Anseriformes | Anseriformes |
| الفصيلة | Anatidae | Anatidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | 130,0 cm (51.2 in) |
| طول الجناح | 38,2 cm (15.0 in) | 190,0 cm (74.8 in) |
| الوزن | 609,0 g (21.48 oz) | 6200,0 g (218.70 oz) |
| النظام الغذائي | Dives for molluscs, crustaceans, and aquatic invertebrates in coastal and freshwater habitats; diet dominated by … | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| عدد البيض في الوضع | 5-13 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Yellow-billed Teal
Freshwater lakes, marshes, rivers, and bogs from sea level to 4,500 m across South America from Colombia and Venezuela south to Tierra del Fuego. Common at high-altitude Andean lakes and puna wetlands.
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Yellow-billed Teal
Male utters a high-pitched, clear whistle; female gives a soft, muffled quack. Quiet calls suit the high-altitude Andean wetlands where this teal forages in shallow freshwater.
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.
Geographic Range & Migration
Yellow-billed Teal
Breeds in northern Canada and Alaska; winters on the Atlantic coast from Labrador to South Carolina and in Chesapeake Bay.
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
حالة الحفاظ
Yellow-billed Teal
Black Swan
How to Tell Them Apart
Yellow-billed Teal
Brownish-gray body finely mottled with dark spots. Diagnostic bright yellow bill with dark culmen stripe. Speculum iridescent green. Head grayish-brown, slightly darker crown. Sexes similar. Andean and Patagonian lakes.
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
About These Birds
Yellow-billed Teal
A small brown teal with a distinctive bright yellow bill, dark crown, green speculum with white borders, and orange legs. Widespread in South American highland and lowland wetlands. One of the most common ducks in the Andes. Gregarious; forms large flocks outside breeding season.
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.