Baer's Pochard vs Mute Swan
Aythya baeri comparado com Cygnus olor
Side-by-Side Comparison
| Atributo | Baer's Pochard | Mute Swan |
|---|---|---|
| Nome científico | Aythya baeri | Cygnus olor |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Critically Endangered | Least Concern |
| Comprimento | — | 152,0 cm (59.8 in) |
| Envergadura | 40,4 cm (15.9 in) | 235,0 cm (92.5 in) |
| Peso | 707,25 g (24.95 oz) | 11000,0 g (388.01 oz) |
| Dieta | Dives for molluscs and aquatic invertebrates; diet dominated by hard-shelled benthic prey in coastal shallow-water … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Tamanho da postura | 6-13 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Baer's Pochard
Breeds on lakes and rivers in boreal forests of eastern Siberia and northeastern China. Winters on freshwater lakes and wetlands in eastern and southeastern Asia. Critically Endangered; tiny remaining population.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Baer's Pochard
Male gives a low, grating wheeze; female produces a harsh quacking series. Calls resemble Tufted Duck but slightly softer; among the rarest duck calls in East Asia due to its …
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Baer's Pochard
Breeds in Arctic Canada and Alaska; winters at sea off both US coasts and in the Great Lakes during migration.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Estado de conservação
Baer's Pochard
Mute Swan
How to Tell Them Apart
Baer's Pochard
Males have dark glossy greenish-black head; chestnut breast; white flanks and undertail. White eye. Females brown with chestnut breast and pale face patch. White wing stripe in flight. Critically endangered …
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Baer's Pochard
O pato de Baer é um pato mergulhador criticamente ameaçado nativo do nordeste da China e adjacente Rússia. Os machos têm cabeça e pescoço verdes com olhos brancos característicos. Cria em zonas húmidas de floresta inundada e hiberna no Sul e Sudeste da Ásia. As populações colapsaram nos últimos anos de números anteriores de milhares para apenas centenas, tornando-o um dos patos mais em perigo do mundo. As causas incluem caça, perda de habitat e perturbação.
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.