Sunda Teal vs American Black Duck
Anas gibberifrons 比較対象 Anas rubripes
Side-by-Side Comparison
| 属性 | Sunda Teal | American Black Duck |
|---|---|---|
| 学名 | Anas gibberifrons | Anas rubripes |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 38.7 cm (15.2 in) | 53.4 cm (21.0 in) |
| 体重 | 409.25 g (14.44 oz) | 1211.25 g (42.73 oz) |
| 食性 | Dives for aquatic invertebrates, molluscs, and plant matter; diet varies with habitat between freshwater and … | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| 一腹卵数 | 7-8 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Sunda Teal
Freshwater lakes, marshes, rice paddies, and coastal wetlands on Indonesian islands including Java, Sulawesi, and the Lesser Sundas. Non-migratory; resident on oceanic islands.
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
Sunda Teal
Female gives a nasal, descending quacking series; male utters a soft whistle. Calls resemble Grey Teal; heard across Indonesian and Philippine freshwater marshes and tidal ponds.
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
Sunda Teal
Breeds in the prairie pothole region and northern boreal zone; winters along the Gulf and Atlantic coasts of North America.
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
Sunda Teal
American Black Duck
How to Tell Them Apart
Sunda Teal
Dark brown body with finely scalloped pale feather edges. Crown dark; face paler buff-brown. Bill gray. Speculum iridescent green with white borders. Flat forehead profile. Sexes similar. Sunda Islands wetland …
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
Sunda Teal
スンダティールはインドネシアからオーストラリアにかけての東南アジア地域に分布するカモです。灰褐色の羽毛と緑色の翼鏡が特徴です。淡水の湿地、池、川、マングローブ林の縁などに生息します。水草の種子や小型無脊椎動物を食べます。
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。