Whooper Swan vs Black-headed Duck
Cygnus cygnus comparado con Heteronetta atricapilla
Side-by-Side Comparison
| Atributo | Whooper Swan | Black-headed Duck |
|---|---|---|
| Nombre científico | Cygnus cygnus | Heteronetta atricapilla |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 116,4 cm (45.8 in) | 34,7 cm (13.7 in) |
| Peso | 10350,0 g (365.09 oz) | 528,5 g (18.64 oz) |
| Dieta | Dabbling duck feeding on seeds, aquatic insects, and plant material; forages in shallow wetlands; diet … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| Tamaño de la puesta | 2-12 | 2 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Whooper Swan only
Black-headed Duck only
Ninguno
Whooper Swan
Breeds on boreal and subarctic lakes and boggy pools from Iceland and Scandinavia across northern Eurasia to Siberia. Winters on large lakes, estuaries, rivers, and agricultural fields in northwestern Europe and eastern Asia.
Song & Call Comparison
Whooper Swan
A loud, ringing 'wh-OOH-wh-OOH' bugle. Less high-pitched than Trumpeter; similar to Tundra Swan but deeper. Pairs call in musical antiphony. Carries very far over water.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Whooper Swan
Breeds in Arctic tundra from Siberia to western Canada; winters along the Pacific coast from British Columbia to Mexico.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
Estado de conservación
Whooper Swan
Black-headed Duck
How to Tell Them Apart
Whooper Swan
All-white plumage. Long yellow bill with large wedge-shaped yellow patch extending past nostrils, contrasting with black tip. Long flat head profile. Holds neck erect and straight. Juveniles pale gray-brown.
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
Whooper Swan
El cisne cantor es un gran cisne blanco con el pico amarillo y negro. Se llama así por su resonante llamada grave en vuelo. Cría en humedales de la taiga y la tundra del norte de Europa y Asia, y migra al sur en invierno. En invernada, los grupos familiares permanecen juntos y realizan llamadas trompeteras frecuentes. Es el cisne nacional de Finlandia.
Black-headed Duck
El pato cabeza negra es un pequeño pato buceador (~530 g) de América del Sur, familia Anatidae, y el único miembro del género Heteronetta. Tiene la cabeza negra en el macho y cuerpo marrón. Parásita de nido obligada: pone sus huevos en los nidos de otras aves acuáticas, especialmente fochas y pollas de agua. Habita en lagos y lagunas con vegetación emergente de Argentina, Bolivia, Brasil, Chile, Paraguay y Uruguay. No cría su propia cría nunca.