Blue-billed Teal vs Spectacled Duck
Spatula hottentota comparado com Speculanas specularis
Side-by-Side Comparison
| Atributo | Blue-billed Teal | Spectacled Duck |
|---|---|---|
| Nome científico | Spatula hottentota | Speculanas specularis |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Near Threatened |
| Comprimento | — | — |
| Envergadura | 29,4 cm (11.6 in) | 52,4 cm (20.6 in) |
| Peso | 269,2 g (9.50 oz) | 1248,25 g (44.03 oz) |
| Dieta | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … | Eats aquatic plants, seeds, and invertebrates; dabbles in shallow water; diet varies widely between seasons … |
| Tamanho da postura | 5-12 | 4-9 |
| Population Trend | — | — |
Habitat Comparison
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.
Spectacled Duck
Clear fast-flowing rivers and streams in temperate forest from central Chile and adjacent Argentina south to Tierra del Fuego. Requires cold turbulent mountain rivers with riparian forest. Avoids slow or muddy water.
Song & Call Comparison
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.
Spectacled Duck
Emits deep, guttural quacking notes; alarm is a loud, repeated honking bark. Calls are resonant and powerful, carrying far along fast-flowing Patagonian rivers.
Geographic Range & Migration
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
Spectacled Duck
Breeds in wetlands from Iceland to Siberia; winters in temperate and subtropical Asia, Europe, and North Africa.
Estado de conservação
Blue-billed Teal
Spectacled Duck
How to Tell Them Apart
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.
Spectacled Duck
Dark brown body with fine pale speckling. Distinctive white 'spectacle' rings around eyes. Iridescent greenish-bronze speculum. Underparts pale buff-brown. Bill grayish; legs orange. Andean and Patagonian streams.
About These Birds
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.
Spectacled Duck
O pato-dos-espelhos é um pato pequeno endémico do sul do Chile e da Argentina. Os machos têm plumagem castanho-escuro com espelhos alares brancos e verdes característicos. Habita rios, lagos e zonas húmidas costeiras nas florestas temperadas patagónicas. É uma espécie pouco conhecida e pouco estudada. É classificado como quase ameaçado devido ao declínio da qualidade e disponibilidade do habitat. É um residente permanente e não migratório do extremo sul da América do Sul.