Emperor Goose vs African Pygmy-goose
Anser canagicus comparado con Nettapus auritus
Side-by-Side Comparison
| Atributo | Emperor Goose | African Pygmy-goose |
|---|---|---|
| Nombre científico | Anser canagicus | Nettapus auritus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 74,8 cm (29.4 in) | 29,9 cm (11.8 in) |
| Peso | 2300,45 g (81.15 oz) | 272,5 g (9.61 oz) |
| Dieta | Grazes aquatic plants and terrestrial grasses; upends in shallow water; winter diet shifts toward grain … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| Tamaño de la puesta | 1-8 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Emperor Goose
Breeds on coastal tundra near the Bering Sea in Alaska and Chukotka. Winters on rocky coastal shorelines, kelp beds, and intertidal flats along the Aleutian Islands and Alaska Peninsula.
African Pygmy-goose
Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.
Song & Call Comparison
Emperor Goose
A low, nasal 'clag-clag' call. Less vocal than other Anser geese. Gives contact calls in flocks during Arctic breeding and Pacific coast wintering. Somewhat quiet.
African Pygmy-goose
Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.
Geographic Range & Migration
Emperor Goose
Breeds in the eastern Arctic of Canada; winters along the Atlantic coast from Newfoundland to Florida and occasionally to Texas.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Estado de conservación
Emperor Goose
African Pygmy-goose
How to Tell Them Apart
Emperor Goose
Body plumage blue-gray with black and white feather scalloping. White head and hindneck contrasting with dark throat. Orange-yellow legs. Bill pink-orange. Tail white. Adults striking; sexes similar.
African Pygmy-goose
Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.
About These Birds
Emperor Goose
El ganso emperador es un ganso ártico que cría exclusivamente en las costas de Alaska y el extremo noreste de Siberia, pasando el invierno principalmente en las costas de las islas Aleutianas y el suroeste de Alaska. Tiene el plumaje gris barrado con la cabeza y la parte superior del cuello blancos. Se alimenta principalmente de plantas costeras, algas marinas e invertebrados intertidales.
African Pygmy-goose
El pigmeo africano o pato enano africano es el pato más pequeño de África y uno de los patos más pequeños del mundo. Tiene plumaje de color verde oscuro y blanco con el cuello de color castaño rojizo. Habita en lagunas tranquilas, estanques y pantanos con abundante vegetación flotante, especialmente lirios de agua, en África subsahariana.