American Black Duck vs Whooper Swan
Anas rubripes comparado con Cygnus cygnus
Side-by-Side Comparison
| Atributo | American Black Duck | Whooper Swan |
|---|---|---|
| Nombre científico | Anas rubripes | Cygnus cygnus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 116,4 cm (45.8 in) |
| Peso | 1211,25 g (42.73 oz) | 10350,0 g (365.09 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Dabbling duck feeding on seeds, aquatic insects, and plant material; forages in shallow wetlands; diet … |
| Tamaño de la puesta | 1-17 | 2-12 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Ninguno
Whooper Swan only
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
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
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
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.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Whooper Swan
Breeds in Arctic tundra from Siberia to western Canada; winters along the Pacific coast from British Columbia to Mexico.
Estado de conservación
American Black Duck
Whooper Swan
How to Tell Them Apart
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
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.
About These Birds
American Black Duck
El pato negro americano es un gran pato de color marrón muy oscuro con una cabeza más clara y un llamativo espéculo alar púrpura. Habita en humedales del este de Norteamérica y se está hibridando cada vez más con el pato de collar introducido en su rango, lo que representa una amenaza para su pureza genética. Prefiere marismas costeras, pantanos boscosos y lagos tranquilos.
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.