Ferruginous Duck vs Trauerschwan
Aythya nyroca verglichen mit Cygnus atratus
Side-by-Side Comparison
| Merkmal | Ferruginous Duck | Trauerschwan |
|---|---|---|
| Wissenschaftlicher Name | Aythya nyroca | Cygnus atratus |
| Ordnung | Anseriformes | Anseriformes |
| Familie | Anatidae | Anatidae |
| Erhaltungsstatus | Near Threatened | Least Concern |
| Länge | — | 130,0 cm (51.2 in) |
| Flügelspannweite | 36,5 cm (14.4 in) | 190,0 cm (74.8 in) |
| Gewicht | 594,1666666666666 g (20.96 oz) | 6200,0 g (218.70 oz) |
| Ernährung | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal habitats; diet dominated by hard-shelled invertebrates. | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| Gelegegröße | 4-17 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Ferruginous Duck
Freshwater lakes, marshes, and river deltas with dense emergent vegetation in southern Eurasia from central Europe east to Central Asia and China. Winters in the Mediterranean, South Asia, and sub-Saharan Africa.
Trauerschwan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Ferruginous Duck
Male emits a soft, wheeling purr; female gives a harsh, rapid quacking series. The male's quiet purring display call contrasts with the female's repeated, grating notes on Mediterranean marshes.
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.
Geographic Range & Migration
Ferruginous Duck
Breeds in boreal and sub-Arctic Canada; winters on the Atlantic coast from New England to the Gulf States.
Trauerschwan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Erhaltungsstatus
Ferruginous Duck
Trauerschwan
How to Tell Them Apart
Ferruginous Duck
Rich chestnut-brown head, neck and breast; white undertail conspicuous. White eye in males (brown in females). Dark back. Bold white wing stripe in flight. Compact and rounded. Males brighter chestnut; …
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
About These Birds
Ferruginous Duck
A small compact diving duck. Males have rich chestnut-brown head and body, white eye, and white undertail; females are duller. Found across Eurasia and Africa. Locally common on Mediterranean and Central Asian lakes; population declining. Near Threatened globally.
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.