Andean Teal vs American Black Duck
Anas andium 比較対象 Anas rubripes
Side-by-Side Comparison
| 属性 | Andean Teal | American Black Duck |
|---|---|---|
| 学名 | Anas andium | Anas rubripes |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 44.8 cm (17.6 in) | 53.4 cm (21.0 in) |
| 体重 | 457.0 g (16.12 oz) | 1211.25 g (42.73 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow coastal and freshwater habitats; diet varies … | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| 一腹卵数 | 5-13 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Andean Teal
High-altitude freshwater lakes, marshes, and boggy streams at 2,500–4,500 m in the Andes of Colombia, Ecuador, and Peru. Strongly associated with paramo and subpáramo wetlands.
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
Song & Call Comparison
Andean Teal
Male gives a clear, whistled note; female produces a soft quacking series. Subdued vocalizations of this high-altitude Andes teal blend with the wind across paramo lakes.
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
Geographic Range & Migration
Andean Teal
Breeds in Arctic and sub-Arctic North America; winters along both US coasts, the Gulf of Mexico, and the Great Lakes.
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
保全状況
Andean Teal
American Black Duck
How to Tell Them Apart
Andean Teal
Brown body with fine dark spotting; head grayish-brown. Yellow bill with darker culmen. Iridescent green speculum with white front border. Legs grayish-orange. Sexes similar. High-altitude Andean specialist.
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
About These Birds
Andean Teal
A small brown teal with yellow bill and green speculum. Closely related to Yellow-billed Teal; sometimes considered conspecific. Restricted to high-altitude Andean wetlands of Colombia, Ecuador, and Peru. Listed as Near Threatened due to wetland loss.
American Black Duck
北米東部の湿地、沼、河川に生息するカモ（体長53〜61cm）。全体的に暗褐色でマガモの雌に似るが、嘴の色や翼鏡の色が異なる。Anas rubripes（アメリカクロガモ）は海岸の塩性湿地から内陸の淡水域まで幅広く利用し、マガモとの雑種が多く観察される。Anatidae科。