Madagascar Pochard vs Wandering Whistling-duck
Aythya innotata 비교 대상 Dendrocygna arcuata
Side-by-Side Comparison
| 속성 | Madagascar Pochard | Wandering Whistling-duck |
|---|---|---|
| 학명 | Aythya innotata | Dendrocygna arcuata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Critically Endangered | Least Concern |
| 체장 | — | — |
| 날개 폭 | 37.4 cm (14.7 in) | 37.2 cm (14.6 in) |
| 체중 | 685.0 g (24.16 oz) | 779.5 g (27.50 oz) |
| 식성 | -- | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 산란 수 | 6-10 | 6-15 |
| Population Trend | — | — |
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.
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
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.
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
Geographic Range & Migration
Madagascar Pochard
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
보전 상태
Madagascar Pochard
Wandering Whistling-duck
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; …
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
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.
Wandering Whistling-duck
황갈색-갈색 몸통, 어두운 갈색 등, 엷은 황갈색 아랫면, 밤색 목깃을 가진 중형 홍따오기. 인도네시아에서 호주·태평양 섬까지 열대 습지에 서식. 매우 사회적이고 유목성. 얕은 담수에서 수면 채이기와 잠수로 채이며 먹이를 구한다.