Black Swan vs Paradise Shelduck
Cygnus atratus 比較対象 Tadorna variegata
Side-by-Side Comparison
| 属性 | Black Swan | Paradise Shelduck |
|---|---|---|
| 学名 | Cygnus atratus | Tadorna variegata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 130.0 cm (51.2 in) | — |
| 翼開長 | 190.0 cm (74.8 in) | 70.2 cm (27.6 in) |
| 体重 | 6200.0 g (218.70 oz) | 1569.5 g (55.36 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Eats seeds, grasses, and aquatic invertebrates; grazes near water; dabbles in shallows; diet varies with … |
| 一腹卵数 | 4-6 | 5-15 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Paradise Shelduck
Open farmland, grassland, lake shores, riverbeds, and wetlands throughout both main islands of New Zealand. Nests in caves, burrows, hollow trees, and dense vegetation. Highly territorial in the breeding season.
Song & Call Comparison
Black Swan
Gives a musical bugling 'boo-boo-boo' in flight and softer honking on water. Less vocal than Mute Swan; produces a baying call when alarmed. Wings whistle softly in flight.
Paradise Shelduck
Male gives a high-pitched whistle; female gives a loud, harsh cackling call 'rak-rak-rak'. New Zealand's only endemic shelduck; calls echoing in open farmland are distinctive.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Paradise Shelduck
Breeds in Eurasia from the UK to Siberia; winters across sub-Saharan Africa and the Indian subcontinent.
保全状況
Black Swan
Paradise Shelduck
How to Tell Them Apart
Black Swan
Almost entirely black with white flight feathers visible in flight. Red bill with a white band near the tip. Dark red to reddish-brown iris.
Bright red bill with a pale tip and prominent white band
Paradise Shelduck
Extreme dimorphism. Males have black head with green gloss and black-and-chestnut body. Females have pure white head and neck contrasting with rich chestnut-rufous body. Both show white wing patches. New …
About These Birds
Black Swan
コクチョウはかつてすべての白鳥は白いと信じていたヨーロッパ人に不可能と考えられており、帰納的推論の失敗の有名な哲学的な例となっている。西オーストラリア州の州の鳥。コクチョウは生涯続く番いの絆を形成し、両親が共同で抱卵と雛の世話を行う。
Paradise Shelduck
ニュージーランドシェルダックはニュージーランド固有のカモです。雌は白い頭部と橙色の体が特徴的で、雌の方が派手な色彩を持つ珍しい種です。湖、川、湿地、農地に生息し、草、種子、無脊椎動物を採食します。