African Pygmy-goose vs White-backed Duck
Nettapus auritus comparado con Thalassornis leuconotus
Side-by-Side Comparison
| Atributo | African Pygmy-goose | White-backed Duck |
|---|---|---|
| Nombre científico | Nettapus auritus | Thalassornis leuconotus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 29,9 cm (11.8 in) | 33,3 cm (13.1 in) |
| Peso | 272,5 g (9.61 oz) | 704,6666666666666 g (24.86 oz) |
| Dieta | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … | Eats aquatic plants, grasses, and seeds; large tropical swan grazing on lake margins and floating … |
| Tamaño de la puesta | 6-12 | 4-10 |
| Population Trend | — | — |
Habitat Comparison
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.
White-backed Duck
Freshwater lakes, ponds, and swamps with abundant floating aquatic vegetation, especially water lilies, in sub-Saharan Africa and Madagascar. Prefers shallow sheltered water with emergent vegetation for cover.
Song & Call Comparison
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.
White-backed Duck
Soft, low whistles and hissing sounds. The White-backed Duck is relatively quiet compared to whistling-ducks. Alarm call is a low 'peep'. Mostly heard at night.
Geographic Range & Migration
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
White-backed Duck
Breeds in subarctic Canada; winters along the Atlantic coast from New England to Florida and on the Gulf Coast.
Estado de conservación
African Pygmy-goose
White-backed Duck
How to Tell Them Apart
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.
White-backed Duck
Heavily mottled and barred brown and buff overall. Diagnostic white back patch visible in flight. Head brown with whitish face and chin. Stiff tail held erect. Sexes similar; stiff-tail diving …
About These Birds
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.
White-backed Duck
El pato blanquinegro es un pato de cola tiesa africano con un plumaje críptico de color marrón oscuro moteado de blanco. Se distingue por su cabeza de color caqui y el cuello barreado. Habita en pantanos con vegetación densa y lagnas con abundante vegetación flotante en África subsahariana y Madagascar. Está clasificado como casi amenazado.