Madagascar Pochard vs Mute Swan
Aythya innotata comparado com Cygnus olor
Side-by-Side Comparison
| Atributo | Madagascar Pochard | Mute Swan |
|---|---|---|
| Nome científico | Aythya innotata | Cygnus olor |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Critically Endangered | Least Concern |
| Comprimento | — | 152,0 cm (59.8 in) |
| Envergadura | 37,4 cm (14.7 in) | 235,0 cm (92.5 in) |
| Peso | 685,0 g (24.16 oz) | 11000,0 g (388.01 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow coastal and freshwater habitats. | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Tamanho da postura | 6-10 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Madagascar Pochard
Restricted to Lake Matsaborimena in the highlands of northern Madagascar at about 1,500 m altitude. Uses deep-water mountain lakes with aquatic vegetation. Critically Endangered; tiny wild population.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Madagascar Pochard
Critically Endangered; produces a soft, Aythya-like purring and grating quacking. Calls are not well-documented; likely similar to closely related Ferruginous Duck based on phylogeny.
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
Madagascar Pochard
Breeds across the northern boreal zone of Canada and Alaska; winters along the Pacific and Atlantic coasts of North America.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Estado de conservação
Madagascar Pochard
Mute Swan
How to Tell Them Apart
Madagascar Pochard
Males have brown head and neck; dark brown back; pale gray flanks with white undertail. White eye. Blue-gray bill. Females browner with pale face patch and brown eye. 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
Madagascar Pochard
O pato-do-madagáscar é um pato mergulhador criticamente ameaçado endémico da ilha de Madagáscar. Considerado possivelmente extinto durante décadas, foi redescoberto em 2006 no lago Manambolomaty. As populações são extremamente pequenas, tornando-o um dos patos mais raros do mundo. Enfrenta graves ameaças de degradação de habitat, introdução de peixes exóticos, e caça. Intensos esforços de conservação estão em curso para evitar a sua extinção.
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.