Barnacle Goose vs Spotted Whistling-duck
Branta leucopsis 比較対象 Dendrocygna guttata
Side-by-Side Comparison
| 属性 | Barnacle Goose | Spotted Whistling-duck |
|---|---|---|
| 学名 | Branta leucopsis | Dendrocygna guttata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 76.4 cm (30.1 in) | 41.3 cm (16.3 in) |
| 体重 | 1685.0 g (59.44 oz) | 677.5 g (23.90 oz) |
| 食性 | Large white swan grazing aquatic plants and grasses; upends for submerged vegetation; supplements diet with … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 一腹卵数 | 2-9 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Barnacle Goose
Breeds on inaccessible Arctic cliff ledges in Greenland, Svalbard, and Novaya Zemlya. Winters on coastal saltmarshes, pastures, and estuaries in northwestern Europe, particularly Scotland and Ireland.
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
Barnacle Goose
A rapid, high-pitched barking 'uk-uk-uk' given rapidly in flocks. Higher-pitched and more rapid than Canada Goose. Migrating flocks create a constant excited barking chorus.
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
Barnacle Goose
Breeds in Arctic tundra of Alaska and Canada; winters on the Pacific and Atlantic coasts of the United States and northern Mexico.
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
Barnacle Goose
Spotted Whistling-duck
How to Tell Them Apart
Barnacle Goose
Striking black, white and gray pattern. White face and forehead; black crown, neck, and upper breast. Gray back with black and white barring. White underparts. Black tail. Sexes similar; elegant …
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
Barnacle Goose
シロガシラガンはグリーンランド、スバールバル諸島、ロシア北西部に繁殖し、ヨーロッパ北西部で越冬するガンです。白い顔と黒い首が特徴的です。海岸の崖上に営巣し、ヒナは崖から飛び降りて親の後を追うことで有名です。塩性湿地や農地で採食します。
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。