Wandering Whistling-duck vs Surf Scoter
Dendrocygna arcuata 비교 대상 Melanitta perspicillata
Side-by-Side Comparison
| 속성 | Wandering Whistling-duck | Surf Scoter |
|---|---|---|
| 학명 | Dendrocygna arcuata | Melanitta perspicillata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 37.2 cm (14.6 in) | 45.3 cm (17.8 in) |
| 체중 | 779.5 g (27.50 oz) | 1019.75 g (35.97 oz) |
| 식성 | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for molluscs, crustaceans, and herring spawn in coastal waters. Uses its distinctive swollen bill … |
| 산란 수 | 6-15 | 5-9 |
| Population Trend | — | — |
Habitat Comparison
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
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.
Surf Scoter
Male produces a low, gurgling burble; female gives a crow-like, guttural cawing. The female's rasping, crow-like call is startling; males make soft, liquid gurgling notes during courtship.
Geographic Range & Migration
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Surf Scoter
Breeds in boreal forests and tundra of northern North America. Winters along Pacific and Atlantic coasts south to Baja California and the Carolinas.
보전 상태
Wandering Whistling-duck
Surf Scoter
How to Tell Them Apart
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.
Surf Scoter
Male is entirely glossy black except for white patches on forehead and nape; bill tricolored orange, red, and white with black spot. Female sooty-brown with two white facial patches.
About These Birds
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.
Surf Scoter
대형 해오리로 체장 48–56cm이며, 수컷은 전신이 검은색에 흰 이마와 목 반점, 화려한 다색 부리를 갖는다. 북아메리카 북부 호수와 연못에서 번식하고 양쪽 해안에서 월동한다. 잠수하여 연체동물과 갑각류를 먹는다. 관심 필요 종이다.