Sunda Teal vs Black-headed Duck
Anas gibberifrons comparado com Heteronetta atricapilla
Side-by-Side Comparison
| Atributo | Sunda Teal | Black-headed Duck |
|---|---|---|
| Nome científico | Anas gibberifrons | Heteronetta atricapilla |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Near Threatened | Least Concern |
| Comprimento | — | — |
| Envergadura | 38,7 cm (15.2 in) | 34,7 cm (13.7 in) |
| Peso | 409,25 g (14.44 oz) | 528,5 g (18.64 oz) |
| Dieta | Dives for aquatic invertebrates, molluscs, and plant matter; diet varies with habitat between freshwater and … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| Tamanho da postura | 7-8 | 2 |
| Population Trend | — | — |
Habitat Comparison
Sunda Teal
Freshwater lakes, marshes, rice paddies, and coastal wetlands on Indonesian islands including Java, Sulawesi, and the Lesser Sundas. Non-migratory; resident on oceanic islands.
Song & Call Comparison
Sunda Teal
Female gives a nasal, descending quacking series; male utters a soft whistle. Calls resemble Grey Teal; heard across Indonesian and Philippine freshwater marshes and tidal ponds.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Sunda Teal
Breeds in the prairie pothole region and northern boreal zone; winters along the Gulf and Atlantic coasts of North America.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
Estado de conservação
Sunda Teal
Black-headed Duck
How to Tell Them Apart
Sunda Teal
Dark brown body with finely scalloped pale feather edges. Crown dark; face paler buff-brown. Bill gray. Speculum iridescent green with white borders. Flat forehead profile. Sexes similar. Sunda Islands wetland …
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
Sunda Teal
A medium-sized brown teal with pale spotting, green speculum, and a high domed forehead giving the head a distinctive shape. Found on Indonesian islands from Java and Sulawesi to Lesser Sundas. Non-migratory island species. Threatened by hunting and wetland drainage.
Black-headed Duck
O pato-parasita-de-cabeça-preta é um pato único da América do Sul que é um parasita de ninho obrigatório, não construindo o seu próprio ninho. Põe ovos exclusivamente nos ninhos de outros patos, principalmente patos de cauda rígida e macaquinhos-do-pântano. Os machos têm cabeça preta característica e corpo acastanhado. Habita zonas húmidas de água doce na Argentina, Uruguai, sul do Brasil e Chile. As fêmeas têm ovários altamente desenvolvidos e podem pôr muitos ovos ao longo de uma temporada.