Crested Duck vs Mute Swan
Lophonetta specularioides comparado com Cygnus olor
Side-by-Side Comparison
| Atributo | Crested Duck | Mute Swan |
|---|---|---|
| Nome científico | Lophonetta specularioides | Cygnus olor |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | 152,0 cm (59.8 in) |
| Envergadura | 53,8 cm (21.2 in) | 235,0 cm (92.5 in) |
| Peso | 941,3833333333333 g (33.21 oz) | 11000,0 g (388.01 oz) |
| Dieta | Feeds on seeds and aquatic invertebrates; dabbles in ponds and marshes; diet more invertebrate-heavy in … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Tamanho da postura | 5-8 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Crested Duck
Fast-flowing Andean rivers, lakes, and puna wetlands from sea level to 4,500 m in Peru, Bolivia, Chile, Argentina, and the Falkland Islands. Occupies both coastal and high-altitude wetland habitats.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Crested Duck
Produces a harsh, rattling call and loud hissing alarm notes. Both sexes vocalize with grating, nasal croaking sounds echoing across Andean rocky shores and rivers.
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
Crested Duck
Breeds across Eurasia; winters in sub-Saharan Africa. One of the most abundant Palearctic ducks on the African wintering grounds.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Estado de conservação
Crested Duck
Mute Swan
How to Tell Them Apart
Crested Duck
Brown body with dark streaking; long pointed crest on hindcrown. Face and throat pale with dark eye patch. Iridescent purple-bronze speculum bordered white. Bill and legs grayish. Sexes similar. Andean …
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
Crested Duck
O pato-especulado é um pato grande dos Andes e da Patagónia sul-americana. Os machos têm crista vermelha pequena e plumagem castanho-mosqueada com grande espelho alar branco brilhante. Habita zonas húmidas andinas de alta altitude e lagos patagónicos, rios e costas marinhas. Existem duas subespécies: a andina e a patagónica. É um pato ativo e frequentemente visto em pares ou pequenos grupos. Tem voz complexa usada em exibições territoriais.
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.