Fulvous Whistling-duck vs Blue-billed Teal
Dendrocygna bicolor 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Fulvous Whistling-duck | Blue-billed Teal |
|---|---|---|
| 学名 | Dendrocygna bicolor | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 44.6 cm (17.6 in) | 29.4 cm (11.6 in) |
| 体重 | 733.4 g (25.87 oz) | 269.2 g (9.50 oz) |
| 食性 | Grazes grasses and sedges in Arctic tundra; large migratory goose; winter diet dominated by agricultural … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 6-16 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Fulvous Whistling-duck
Freshwater marshes, rice paddies, flooded fields, shallow lakes, and river margins across warm tropical and subtropical regions of the Americas, Africa, and South Asia. Highly nomadic, following rains.
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
Fulvous Whistling-duck
A soft, rhythmic 'ka-WHEE-00' whistle. Flocks give continuous soft whistling sounds during flight over tropical wetlands. Also gives shorter 'kee' contact notes.
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
Fulvous Whistling-duck
Breeds across Eurasia from Iceland and western Europe to eastern Siberia; winters from Britain to the Mediterranean and South Asia.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
保护状况
Fulvous Whistling-duck
Blue-billed Teal
How to Tell Them Apart
Fulvous Whistling-duck
Warm fulvous-buff underparts with creamy white flank stripes. Upperparts dark brown with pale buff feather edges. Dark brown stripe down back of neck. Long bluish-gray legs. Sexes identical.
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
Fulvous Whistling-duck
茶色树鸭是分布最广的树鸭，见于美洲、非洲和亚洲南部的热带和亚热带地区。体型中等，体羽棕褐色，背部具浅色羽缘，腰部白色，在飞行时明显可见。常在稻田、湿地和草地觅食，以草籽、水生植物和昆虫为食。有时结大群夜间觅食于农田。
Blue-billed Teal
霍屯都鸭是非洲的一种小型水面鸭，以南非土著霍屯都人命名，主要分布于撒哈拉以南非洲东部和南部。体型小，雄鸟头颈部蓝灰色，体羽棕褐色有细纹；雌鸟褐色。栖息于淡水湖泊、沼泽和湿地，以水生植物和无脊椎动物为食。