Hooded Merganser vs Blue-billed Teal
Lophodytes cucullatus 对比 Spatula hottentota
Side-by-Side Comparison
| 属性 | Hooded Merganser | Blue-billed Teal |
|---|---|---|
| 学名 | Lophodytes cucullatus | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 37.3 cm (14.7 in) | 29.4 cm (11.6 in) |
| 体重 | 638.0 g (22.50 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for small fish, aquatic invertebrates, and frogs in clear freshwater streams and ponds. Uses … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 产卵数 | 6-18 | 5-12 |
| 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.
Song & Call Comparison
Hooded Merganser
Male produces a low, rolling rolling-tum tumbling call; female gives a harsh, grating quack. The male's frog-like rolling call is unique among North American ducks during winter courtship.
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
Hooded Merganser
Breeds in forested wetlands of North America from southern Canada to the northern United States. Winters on rivers and lakes south to Mexico.
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
Hooded Merganser
Blue-billed Teal
How to Tell Them Apart
Hooded Merganser
Male has fan-shaped black-and-white erectile crest; black head and neck, white breast with two black bars, rich cinnamon flanks. Female is greyish-brown with rusty-cinnamon crest, paler below.
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
Hooded Merganser
冠秋沙鸭是北美最小的锯嘴鸭，以雄鸟能展开和折叠的大型扇形白色羽冠著称。繁殖于北美东部和西部的林地湖泊，在树洞中营巢，越冬于南部沿海和内陆水域。雄鸟黑白相间，冠羽醒目；雌鸟褐色，冠羽棕色。以鱼类、甲壳类和水生昆虫为食。
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。