Blue-billed Teal vs Silver Teal
Spatula hottentota 比較対象 Spatula versicolor
Side-by-Side Comparison
| 属性 | Blue-billed Teal | Silver Teal |
|---|---|---|
| 学名 | Spatula hottentota | Spatula versicolor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.4 cm (11.6 in) | 37.0 cm (14.6 in) |
| 体重 | 269.2 g (9.50 oz) | 409.75 g (14.45 oz) |
| 食性 | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … | Dabbles for seeds, aquatic plants, and invertebrates; diet varies with season; forages in shallow ponds … |
| 一腹卵数 | 5-12 | 6-10 |
| Population Trend | — | — |
Habitat Comparison
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.
Silver Teal
Freshwater wetlands, marshes, lakes, and flooded fields from sea level to 3,500 m in southern South America from Peru and Bolivia through Chile, Argentina, Uruguay, and southern Brazil.
Song & Call Comparison
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.
Silver Teal
Male produces a soft, nasal prrp note; female gives a subdued quack. Quiet vocalizations suit the species' secretive nature in South American reedy marshes.
Geographic Range & Migration
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
Silver Teal
Breeds in sub-Arctic Europe and western Russia; winters on coasts of Western Europe, the Mediterranean, and the Caspian Sea.
保全状況
Blue-billed Teal
Silver Teal
How to Tell Them Apart
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.
Silver Teal
Black crown contrasting with white face and sides. Body pale silvery-gray with fine dark vermiculations. Bold yellow-and-black bill. Blue-gray forewing and iridescent green speculum in flight. Sexes similar.
About These Birds
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.
Silver Teal
A medium-sized teal with a striking black cap, white face, blue bill with yellow sides, and boldly spotted scaly-looking flanks. Widespread in lowland and mid-altitude South America. Often found in pairs or small groups. Feeds by dabbling in shallow water.