New Zealand Merganser vs Höckerschwan
Mergus australis verglichen mit Cygnus olor
Side-by-Side Comparison
| Merkmal | New Zealand Merganser | Höckerschwan |
|---|---|---|
| Wissenschaftlicher Name | Mergus australis | Cygnus olor |
| Ordnung | Anseriformes | Anseriformes |
| Familie | Anatidae | Anatidae |
| Erhaltungsstatus | Extinct | Least Concern |
| Länge | — | 152,0 cm (59.8 in) |
| Flügelspannweite | — | 235,0 cm (92.5 in) |
| Gewicht | 898,0 g (31.68 oz) | 11000,0 g (388.01 oz) |
| Ernährung | Extinct; historically dived for fish and aquatic invertebrates in New Zealand freshwater streams. Diet inferred … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Gelegegröße | -- | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Höckerschwan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
New Zealand Merganser
Extinct (EX). No recordings exist. This flightless New Zealand merganser likely gave grunting, nasal calls similar to the Red-breasted Merganser based on skull morphology and taxonomy.
Höckerschwan
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
New Zealand Merganser
Formerly endemic to South Island and Stewart Island, New Zealand. Extinct since the 1900s.
Höckerschwan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Erhaltungsstatus
New Zealand Merganser
Höckerschwan
How to Tell Them Apart
New Zealand Merganser
Both sexes were dark brown overall; male had greenish-black gloss on head with slight crest, whitish barring on wings; female paler brown with rufous-tinged head and whitish throat.
Höckerschwan
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
New Zealand Merganser
An extinct flightless or near-flightless merganser (~900 g) of family Anatidae, endemic to the subantarctic Auckland Islands of New Zealand. Inhabited forested riverine habitats and fed on freshwater fish and invertebrates. Exterminated by hunting and predation from introduced mammals; last reliably recorded in 1902 and declared Extinct.
Höckerschwan
Der Höckerschwan gehört zu den schwersten flugfähigen Vögeln; Männchen können bis zu 14 kg wiegen. Trotz seines englischen Namens („Mute Swan“, stummer Schwan) ist er keineswegs stumm und gibt zischende, grunzende und schnaubende Laute von sich. Höckerschwäne gehen lebenslange Paarbindungen ein, und ihre aggressive Verteidigung des Brutreviers ist bekannt.