Greater White-fronted Goose vs Black-necked Swan
Anser albifrons в сравнении с Cygnus melancoryphus
Side-by-Side Comparison
| Характеристика | Greater White-fronted Goose | Black-necked Swan |
|---|---|---|
| Научное название | Anser albifrons | Cygnus melancoryphus |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 81,6 cm (32.1 in) | 82,4 cm (32.4 in) |
| Масса | 2471,0 g (87.16 oz) | 5275,0 g (186.07 oz) |
| Питание | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | -- |
| Размер кладки | 3-9 | 4-8 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Greater White-fronted Goose only
Black-necked Swan only
Нет
Greater White-fronted Goose
Breeds on Arctic and subarctic tundra and peatlands. Winters on estuaries, agricultural fields, freshwater marshes, and flooded meadows across Europe, Asia, and North America. One of the most widespread geese.
Black-necked Swan
Freshwater lakes, lagoons, rivers, estuaries, and coastal wetlands in southern South America from central Chile and Argentina to Tierra del Fuego. Partially migratory; concentrates at coastal estuaries in winter.
Song & Call Comparison
Greater White-fronted Goose
A loud, laughing 'kow-lyuk' or musical 'wah-wah'. Gives a distinctive high-pitched yodeling quality lacking in Greylag. Highly vocal in large winter flocks.
Black-necked Swan
A musical, whistling 'whoo' or soft 'whooh'. Less loud than Trumpeter or Whooper Swan. Gives hissing at close range. Considered relatively quiet for a large swan.
Geographic Range & Migration
Greater White-fronted Goose
Breeds in the potholes region of the northern Great Plains; winters in the southern United States and along the Gulf Coast.
Black-necked Swan
Охранный статус
Greater White-fronted Goose
Black-necked Swan
How to Tell Them Apart
Greater White-fronted Goose
Brown-gray body with white forehead patch bordered by white band at bill base. Underparts with bold irregular black bars on belly. Orange bill; orange-yellow legs. Juveniles lack white front and …
Black-necked Swan
White body plumage with entirely black head, neck, and upper foreneck. Red double-lobed knob at bill base. Bill grayish-blue. White stripe behind eye. Pink-red legs. Sexes similar; striking contrast.
About These Birds
Greater White-fronted Goose
A medium-large goose with a white forehead patch, orange bill, grey-brown plumage, and variable black barring on the belly. Widespread and numerous; one of the most abundant geese in the world. Breeds across the high Arctic; winters in a wide range of temperate wetland and agricultural habitats.
Black-necked Swan
A large elegant swan with pure white body plumage and a contrasting jet-black neck and head, a red bill with bright red caruncle, and a white stripe behind the eye. Native to southern South America. Unique coloration makes it unmistakable. Feeds on aquatic vegetation by upending.