Madagascar Pochard vs Mute Swan
Aythya innotata 비교 대상 Cygnus olor
Side-by-Side Comparison
| 속성 | Madagascar Pochard | Mute Swan |
|---|---|---|
| 학명 | Aythya innotata | Cygnus olor |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Critically Endangered | Least Concern |
| 체장 | — | 152.0 cm (59.8 in) |
| 날개 폭 | 37.4 cm (14.7 in) | 235.0 cm (92.5 in) |
| 체중 | 685.0 g (24.16 oz) | 11000.0 g (388.01 oz) |
| 식성 | 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 … |
| 산란 수 | 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.
보전 상태
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
세계에서 가장 희귀한 오리 중 하나로, 2006년 재발견 전까지 멸종된 것으로 여겨졌습니다. 수컷에 흰 눈이 있는 소형 갈색 포차드입니다. 마다가스카르의 매우 작은 고산 호수에서 발견됩니다. 극심위기(CR) 종으로, 극소수 야생 개체군을 보전하기 위한 집중적인 보전 노력이 진행 중입니다.
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.