Trumpeter Swan vs African Pygmy-goose
Cygnus buccinator comparado com Nettapus auritus
Side-by-Side Comparison
| Atributo | Trumpeter Swan | African Pygmy-goose |
|---|---|---|
| Nome científico | Cygnus buccinator | Nettapus auritus |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 125,1 cm (49.3 in) | 29,9 cm (11.8 in) |
| Peso | 9975,0 g (351.86 oz) | 272,5 g (9.61 oz) |
| Dieta | Dabbles for seeds, invertebrates, and aquatic plants in shallow water; diet shifts between plant-rich and … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| Tamanho da postura | 1-9 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Trumpeter Swan
Large deep-water lakes, slow rivers, and wetland complexes in western and interior North America from Alaska and Canada south to Oregon. Winters on ice-free rivers and coastal estuaries.
African Pygmy-goose
Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.
Song & Call Comparison
Trumpeter Swan
A deep, resonant, French-horn-like bugling 'oh-OH-oh'. The most musical of North American swans. Pairs sing in duet. Very different from the thin whistle of smaller swans.
African Pygmy-goose
Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.
Geographic Range & Migration
Trumpeter Swan
Breeds in Alaska and northern Canada; winters along the Pacific and Atlantic coasts from the southern United States to Mexico.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Estado de conservação
Trumpeter Swan
African Pygmy-goose
How to Tell Them Apart
Trumpeter Swan
Entirely snow-white plumage in adults. All-black bill lacking yellow patch. Large size; heaviest North American bird. Neck held straight. Juveniles gray-brown, becoming white by second year. Sexes similar.
African Pygmy-goose
Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.
About These Birds
Trumpeter Swan
O cisne-trombeteiro é o maior pato nativo da América do Norte. Os machos adultos pesam até 12 kg, tornando-os uma das aves mais pesadas da América do Norte. Tem plumagem branca com bico preto. A voz forte e trombeteante é inconfundível. Quase foi extinto no início do século XX devido à caça e perda de habitat, mas programas de reintrodução expandiram as populações para vários estados. Habita zonas húmidas e lagos nas Montanhas Rochosas, Grandes Planícies e noroeste da América …
African Pygmy-goose
O pato-pigmeu-africano é o menor pato africano e um dos menores da família dos anátidos. É encontrado em zonas húmidas tropicais de África subsariana. Os machos têm plumagem brilhante verde-escuro iridescente no dorso com flancos castanhos avermelhados e remendos brancos nas asas. Habita lagos, pântanos e áreas com vegetação aquática flutuante. Nidifica em ocos de árvore perto da água. A sua distribuição está ligada à presença de plantas aquáticas específicas.