Whooper Swan vs Black-headed Duck
Cygnus cygnus से तुलना Heteronetta atricapilla
Side-by-Side Comparison
| विशेषता | Whooper Swan | Black-headed Duck |
|---|---|---|
| वैज्ञानिक नाम | Cygnus cygnus | Heteronetta atricapilla |
| गण | Anseriformes | Anseriformes |
| कुल | Anatidae | Anatidae |
| संरक्षण स्थिति | Least Concern | Least Concern |
| लंबाई | — | — |
| पंखों का फैलाव | 116.4 cm (45.8 in) | 34.7 cm (13.7 in) |
| वजन | 10350.0 g (365.09 oz) | 528.5 g (18.64 oz) |
| आहार | 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 … |
| अंडों की संख्या | 2-12 | 2 |
| Population Trend | — | — |
Habitat Comparison
साझा आवास
Whooper Swan only
Black-headed Duck only
कोई नहीं
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.
संरक्षण स्थिति
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
A large all-white swan with a long neck and a distinctive yellow-and-black bill pattern—a large yellow wedge extending to the nostrils. The national bird of Finland. Calls with a bugling whooping resonance. Breeds in Eurasian subarctic; winters in northwest Europe and East Asia.
Black-headed Duck
A small diving duck (~530 g) of South America, family Anatidae, and the sole member of genus Heteronetta. Inhabits freshwater marshes and lakes in Argentina, Bolivia, Brazil, Chile, and Uruguay. Unique among waterfowl as an obligate brood parasite, laying eggs in nests of coots and other waterbirds. Feeds on seeds and aquatic invertebrates. Least Concern.