Grey Teal vs Spotted Whistling-duck
Anas gracilis 比較対象 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Grey Teal | Spotted Whistling-duck |
|---|---|---|
| 学名 | Anas gracilis | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 38.4 cm (15.1 in) | 41.3 cm (16.3 in) |
| 体重 | 504.25 g (17.79 oz) | 677.5 g (23.90 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates in shallow coastal and freshwater habitats; diet dominated … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 一腹卵数 | 7-8 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Grey Teal
Freshwater and saline wetlands across Australia and New Zealand, including temporary pans, lakes, rivers, and estuaries. Highly nomadic in Australia following unpredictable rainfall. Less nomadic in New Zealand.
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
Song & Call Comparison
Grey Teal
Female gives a high, nasal descending quacking series; male produces a soft, piping whistle. The high-pitched quacking call is distinctive; flocks create a musical chattering on Australian wetlands.
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
Geographic Range & Migration
Grey Teal
Breeds across northern North America in boreal and sub-Arctic zones; winters on both coasts and inland waters of the US.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
保全状況
Grey Teal
Spotted Whistling-duck
How to Tell Them Apart
Grey Teal
Pale gray-brown body finely spotted and scaled dark. Head pale gray-buff with fine dark spots. Red eye. White throat. Iridescent green speculum with white front border. Gray bill; gray legs. …
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
About These Birds
Grey Teal
グレーティールはオーストラリアとニュージーランドに分布する小型のカモです。全身が灰褐色の地味な外見ですが、飛翔時に翼の白い模様が目立ちます。一時的な水たまり、湿地、田んぼ、干ばつ後の内陸湖など様々な水域に適応しています。
Spotted Whistling-duck
スポッテドウィスリングダックはインドネシア、フィリピン、パプアニューギニアに分布するツリーダックです。白い斑点のある褐色の羽毛が特徴で、夜間に特徴的な笛のような声でさえずります。熱帯の湿地、稲田、マングローブ林に生息し、草の種子や水草を採食します。