Höckerschwan vs Hartlaub's Duck
Cygnus olor verglichen mit Pteronetta hartlaubii
Side-by-Side Comparison
| Merkmal | Höckerschwan | Hartlaub's Duck |
|---|---|---|
| Wissenschaftlicher Name | Cygnus olor | Pteronetta hartlaubii |
| Ordnung | Anseriformes | Anseriformes |
| Familie | Anatidae | Anatidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | 152,0 cm (59.8 in) | — |
| Flügelspannweite | 235,0 cm (92.5 in) | 53,4 cm (21.0 in) |
| Gewicht | 11000,0 g (388.01 oz) | 910,0 g (32.10 oz) |
| Ernährung | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Eats seeds, aquatic invertebrates, and plant matter; dabbles in ponds and marshes; diet more invertebrate-heavy … |
| Gelegegröße | 5-7 | 7-11 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Höckerschwan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Hartlaub's Duck
Tropical rainforest streams, forest pools, and shaded swamps from Guinea and Sierra Leone east through the Congo Basin to Uganda and western Kenya. Requires undisturbed riverine forest with shaded water.
Song & Call Comparison
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.
Hartlaub's Duck
A low, nasal 'quack' and soft 'kek-kek'. Generally quieter than other perching ducks. Calls from dense Central and West African rainforest where it is rarely observed.
Geographic Range & Migration
Höckerschwan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Hartlaub's Duck
Breeds in wetlands across Eurasia; winters from Africa and the Middle East to South and Southeast Asia.
Erhaltungsstatus
Höckerschwan
Hartlaub's Duck
How to Tell Them Apart
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
Hartlaub's Duck
Dark chocolate-brown body; white patches at side of head distinctive. Males have dark blue frontal shield extending from bill. Wings show pale blue-gray inner forewing. Legs gray. West African forest …
About These Birds
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.
Hartlaub's Duck
A large dark duck with a chestnut-brown body, dark head and neck, pale blue speculum, and bright red base to the bill in males. Found in tropical African rainforest streams and forest swamps. One of Africa's least-studied ducks. Lives singly or in pairs in shaded forest waterways.