Tundra Bean Goose vs Blue-billed Teal
Anser serrirostris مقارنةً بـ Spatula hottentota
Side-by-Side Comparison
| السمة | Tundra Bean Goose | Blue-billed Teal |
|---|---|---|
| الاسم العلمي | Anser serrirostris | Spatula hottentota |
| الرتبة | Anseriformes | Anseriformes |
| الفصيلة | Anatidae | Anatidae |
| حالة الحفاظ | Not Evaluated | Least Concern |
| الطول | — | — |
| طول الجناح | — | 29,4 cm (11.6 in) |
| الوزن | 2540,0 g (89.60 oz) | 269,2 g (9.50 oz) |
| النظام الغذائي | Eats grasses, seeds, and aquatic plants; dabbles for invertebrates; diet shifts between plant material and … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| عدد البيض في الوضع | 3-8 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Tundra Bean Goose
Breeds on Arctic and subarctic tundra in Siberia. Winters on agricultural land, river floodplains, and wetlands in eastern China, Japan, and Korea, with some wintering in western Europe.
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
Tundra Bean Goose
A nasal, lower call compared to Taiga Bean Goose. Considered subspecifically or specifically distinct; vocalizations are an active taxonomic tool for separation in mixed flocks.
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
Tundra Bean Goose
Breeds in northern prairie regions of North America; winters in the southern United States and along both coasts to Mexico.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
حالة الحفاظ
Tundra Bean Goose
Blue-billed Teal
How to Tell Them Apart
Tundra Bean Goose
Dark brown head and neck; grayish-brown back with pale feather fringing. Underparts pale gray-brown. Orange-yellow legs. Bill black with orange subterminal band. Recently split from Taiga Bean Goose.
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
Tundra Bean Goose
A large brown goose with dark head and neck, orange-patterned black bill, and orange legs. Separated from Taiga Bean Goose as a distinct species. Breeds on Arctic and subarctic tundra; winters in eastern Asia and occasionally western Europe. More common in Japan and eastern China.
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.