Mute Swan vs South African Shelduck
Cygnus olor comparado con Tadorna cana
Side-by-Side Comparison
| Atributo | Mute Swan | South African Shelduck |
|---|---|---|
| Nombre científico | Cygnus olor | Tadorna cana |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | 152,0 cm (59.8 in) | — |
| Envergadura | 235,0 cm (92.5 in) | 69,0 cm (27.2 in) |
| Peso | 11000,0 g (388.01 oz) | 1323,6666666666667 g (46.69 oz) |
| Dieta | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Eats seeds, aquatic plants, and invertebrates; dabbles in shallow water; diet more invertebrate-heavy in breeding … |
| Tamaño de la puesta | 5-7 | 4-11 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Hábitats compartidos
Mute Swan only
Ninguno
South African Shelduck only
Ninguno
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
South African Shelduck
Inland freshwater and saline lakes, pans, dams, and rivers across southern Africa, primarily on the South African plateau, Lesotho, and Namibia. Nests in burrows dug by aardvark. Highly terrestrial for a shelduck.
Song & Call Comparison
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.
South African Shelduck
Male gives a whistled 'wheeu'; female gives a harsh, descending cackle. Calls from South African wetlands and vleis. Sexual dimorphism in call is strong.
Geographic Range & Migration
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
South African Shelduck
Breeds in subarctic Eurasia and winters in sub-Saharan Africa, the Indian subcontinent, and Southeast Asia.
Estado de conservación
Mute Swan
South African Shelduck
How to Tell Them Apart
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
South African Shelduck
Males have gray head and neck; rufous-brown body with white wing coverts and green speculum. Females similar but with white facial markings around bill and eye. Body rich rufous-chestnut. Endemic …
About These Birds
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.
South African Shelduck
El tarro sudafricano o tarro del Cabo es un grande pato del sur de África con la cabeza gris en el macho y la cara blanca con una mancha marrón en la hembra. El cuerpo es de color canela-marrón. Es endémico de Sudáfrica, Namibia y Botsuana, donde habita en humedales abiertos, pantanos y lagos salinos y semisalinos, así como en embalses.