Taiga Bean Goose vs Blue-billed Teal
Anser fabalis 比較対象 Spatula hottentota
Side-by-Side Comparison
| 属性 | Taiga Bean Goose | Blue-billed Teal |
|---|---|---|
| 学名 | Anser fabalis | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 89.7 cm (35.3 in) | 29.4 cm (11.6 in) |
| 体重 | 3115.0 g (109.88 oz) | 269.2 g (9.50 oz) |
| 食性 | Eats seeds, aquatic plants, and invertebrates; forages in shallow water and on land; diet varies … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 一腹卵数 | 3-8 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Taiga Bean Goose
Breeds in taiga forest, boggy clearings, and river valleys across Scandinavia and northern Russia. Winters on agricultural fields, pastures, and river valleys in western and central Europe, particularly Belgium and the Netherlands.
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
Taiga Bean Goose
A low, nasal 'ung-unk' or 'ow' call — less nasal than Grey-lag. Flocks give continuous calling. The call distinction from Tundra Bean Goose is subtle but detectable.
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
Taiga Bean Goose
Breeds across Alaska and Canada; winters in the US interior and along coastlines south to the Gulf of Mexico.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
保全状況
Taiga Bean Goose
Blue-billed Teal
How to Tell Them Apart
Taiga Bean Goose
Dark brown head and neck; back dark brown with pale feather edges giving scalloped appearance. Underparts pale gray-brown. Bill orange-yellow with black base and tip. Orange legs. Darker than Pink-footed …
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
Taiga Bean Goose
ビーンガンはユーラシア北部に繁殖し、温帯地方で越冬するガンです。オレンジ色の嘴と脚が特徴的です。日本では冬鳥として北日本に飛来します。農地、草地、湿地に生息し、農作物の根や葉、草などを採食します。
Blue-billed Teal
A small dark teal with blue-grey bill and legs, brown-streaked plumage, and fine pale spotting on the flanks. The most widespread teal in sub-Saharan Africa. Found on freshwater lakes and marshes. Highly nomadic; follows seasonal rainfall. Swims low in the water like a pochard.