Trauerschwan vs Lake Duck
Cygnus atratus verglichen mit Oxyura vittata
Side-by-Side Comparison
| Merkmal | Trauerschwan | Lake Duck |
|---|---|---|
| Wissenschaftlicher Name | Cygnus atratus | Oxyura vittata |
| Ordnung | Anseriformes | Anseriformes |
| Familie | Anatidae | Anatidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | 130,0 cm (51.2 in) | — |
| Flügelspannweite | 190,0 cm (74.8 in) | 27,6 cm (10.9 in) |
| Gewicht | 6200,0 g (218.70 oz) | 665,0 g (23.46 oz) |
| Ernährung | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for aquatic invertebrates and plant seeds in South American freshwater lakes and marshes. Feeds … |
| Gelegegröße | 4-6 | 3-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Trauerschwan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Trauerschwan
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.
Lake Duck
Male produces a mechanical, drumming staccato call; female gives a soft, nasal quack. Drumming display resembles other Oxyura stiff-tails; heard at dawn on Andean and Patagonian lakes.
Geographic Range & Migration
Trauerschwan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Lake Duck
Resident in southern South America from central Chile and central Argentina south to Tierra del Fuego. Found on lowland lakes and lagoons.
Erhaltungsstatus
Trauerschwan
Lake Duck
How to Tell Them Apart
Trauerschwan
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
Lake Duck
Male is dark chestnut-brown with black head, pale whitish-grey cheeks, and cobalt-blue bill. Female is brownish-buff with streaked upperparts and a distinctive pale supercilium; undertail coverts whitish.
About These Birds
Trauerschwan
Der Trauerschwan galt Europäern, die glaubten, alle Schwäne seien weiß, einst als unmöglich, was ihn zu einem berühmten philosophischen Beispiel für das Scheitern induktiver Schlussfolgerungen machte. Er ist das Wappentier von Western Australia. Trauerschwäne gehen lebenslange Paarbindungen ein, und beide Elternteile teilen sich das Brüten und die Aufzucht der Jungvögel.
Lake Duck
A stiff-tailed duck (~665 g) of southern South America, family Anatidae, with males displaying ruddy plumage and a bright blue bill. Inhabits freshwater lakes, ponds, and marshes from Brazil to Patagonia. Dives for aquatic plants, seeds, and invertebrates. Least Concern; notable for the proportionally longest penis of any vertebrate relative to body size.