Fulvous Whistling-duck vs Blue-billed Teal
Dendrocygna bicolor เปรียบเทียบกับ Spatula hottentota
Side-by-Side Comparison
| คุณสมบัติ | Fulvous Whistling-duck | Blue-billed Teal |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Dendrocygna bicolor | Spatula hottentota |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 44.6 cm (17.6 in) | 29.4 cm (11.6 in) |
| น้ำหนัก | 733.4 g (25.87 oz) | 269.2 g (9.50 oz) |
| อาหาร | Grazes grasses and sedges in Arctic tundra; large migratory goose; winter diet dominated by agricultural … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| จำนวนไข่ | 6-16 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Fulvous Whistling-duck
Freshwater marshes, rice paddies, flooded fields, shallow lakes, and river margins across warm tropical and subtropical regions of the Americas, Africa, and South Asia. Highly nomadic, following rains.
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
Fulvous Whistling-duck
A soft, rhythmic 'ka-WHEE-00' whistle. Flocks give continuous soft whistling sounds during flight over tropical wetlands. Also gives shorter 'kee' contact notes.
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
Fulvous Whistling-duck
Breeds across Eurasia from Iceland and western Europe to eastern Siberia; winters from Britain to the Mediterranean and South Asia.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
สถานะการอนุรักษ์
Fulvous Whistling-duck
Blue-billed Teal
How to Tell Them Apart
Fulvous Whistling-duck
Warm fulvous-buff underparts with creamy white flank stripes. Upperparts dark brown with pale buff feather edges. Dark brown stripe down back of neck. Long bluish-gray legs. Sexes identical.
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
Fulvous Whistling-duck
A medium-sized whistling-duck with warm tawny-brown body, dark brown back, creamy-white flank stripes, and a blue-grey bill. Among the most cosmopolitan of all waterfowl, occurring in North and South America, sub-Saharan Africa, and South Asia. Highly nomadic, following seasonal rainfall.
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.