Snow Goose vs African Pygmy-goose
Anser caerulescens comparado con Nettapus auritus
Side-by-Side Comparison
| Atributo | Snow Goose | African Pygmy-goose |
|---|---|---|
| Nombre científico | Anser caerulescens | Nettapus auritus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 82,4 cm (32.4 in) | 29,9 cm (11.8 in) |
| Peso | 2561,0 g (90.34 oz) | 272,5 g (9.61 oz) |
| Dieta | Grazes submerged aquatic vegetation and eelgrass in estuaries; also takes grasses and sedges on coastal … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| Tamaño de la puesta | 2-6 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Snow Goose only
African Pygmy-goose only
Ninguno
Snow Goose
Breeds on coastal and inland Arctic tundra in Canada, Alaska, and Greenland. Winters on agricultural fields, marshes, and coastal wetlands across the United States and northern Mexico. Forms enormous flocks.
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
Snow Goose
A loud, nasal barking 'luk-luk' or 'kow-kow'. Large flocks create enormous noise during Arctic nesting and winter staging. Considered a noisy, conspicuous goose.
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
Snow Goose
Breeds in eastern North America's boreal forest; winters on the Atlantic coast from New England to South Carolina.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Estado de conservación
Snow Goose
African Pygmy-goose
How to Tell Them Apart
Snow Goose
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
Snow Goose
El ganso de las nieves es un ganso ártico que se presenta en dos morfologías de color: una forma blanca con las puntas de las alas negras y una forma azul-grisácea. Cría en la tundra ártica y migra en enormes bandadas al sur de Estados Unidos y México para pasar el invierno. Sus poblaciones han aumentado explosivamente en las últimas décadas, causando problemas de sobrepastoreo en la tundra.
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.