Black-bellied Whistling-duck vs Blue-billed Teal
Dendrocygna autumnalis comparado com Spatula hottentota
Side-by-Side Comparison
| Atributo | Black-bellied Whistling-duck | Blue-billed Teal |
|---|---|---|
| Nome científico | Dendrocygna autumnalis | Spatula hottentota |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 48,2 cm (19.0 in) | 29,4 cm (11.6 in) |
| Peso | 757,9 g (26.73 oz) | 269,2 g (9.50 oz) |
| Dieta | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| Tamanho da postura | 9-18 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Black-bellied Whistling-duck only
Nenhum
Blue-billed Teal only
Nenhum
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
Blue-billed Teal
Freshwater lakes, marshes, pans, and flooded grasslands across sub-Saharan Africa from Senegal and Sudan south to the Cape. Nomadic; follows seasonal rains. Common but easily overlooked among reed beds.
Song & Call Comparison
Black-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
Blue-billed Teal
Male utters a soft, teal-like peep; female gives a muted quack. Pairs call quietly in dense papyrus; soft contact calls help birds maintain proximity in thick African marsh vegetation.
Geographic Range & Migration
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
Estado de conservação
Black-bellied Whistling-duck
Blue-billed Teal
How to Tell Them Apart
Black-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. Sexes similar.
Blue-billed Teal
Small; males have pale blue-gray bill contrasting with brown-gray body. Head finely spotted; underparts barred brown and white. Males show powder-blue forewing in flight. Females browner. African marsh species.
About These Birds
Black-bellied Whistling-duck
O parreco-de-barriga-preta é um pato assobiadeiro grande que habita zonas húmidas tropicais das Américas, desde o Texas e México até à Argentina. Tem barriga preta, peito castanho ruivo, cabeça cinzenta e bico e pernas vermelhos. Distingue-se dos outros parrecos pelos grandes remendos brancos nas asas visíveis em voo. Muitas vezes empoleira-se em árvores e arbustos. É gregário e frequentemente visto em bandos numerosos em zonas húmidas tropicais e arrozais.
Blue-billed Teal
A small dark teal with blue-grey bill and legs, brown-streaked plumage, and fine pale spotting on the flanks. The most widespread teal in sub-Saharan Africa. Found on freshwater lakes and marshes. Highly nomadic; follows seasonal rainfall. Swims low in the water like a pochard.