Black Swan vs Common Kestrel
Cygnus atratus 比較対象 Falco tinnunculus
Side-by-Side Comparison
| 属性 | Black Swan | Common Kestrel |
|---|---|---|
| 学名 | Cygnus atratus | Falco tinnunculus |
| 目 | Anseriformes | Falconiformes |
| 科 | Anatidae | Falconidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 130.0 cm (51.2 in) | 34.0 cm (13.4 in) |
| 翼開長 | 190.0 cm (74.8 in) | 74.0 cm (29.1 in) |
| 体重 | 6200.0 g (218.70 oz) | 190.0 g (6.70 oz) |
| 食性 | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … |
| 一腹卵数 | 4-6 | 1-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
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.
Common Kestrel
A shrill, repeated 'kee-kee-kee-kee' or 'kik-ik-ik', especially near nest. Alarm call is a nasal chattering. Generally less vocal than larger falcons. Calls ring clearly in open country.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Common Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
保全状況
Black Swan
Common Kestrel
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
Common Kestrel
Males have a blue-grey head and tail with a rufous back spotted with black. Females are rufous-brown with heavy barring. Both have a dark moustachial stripe.
Short, hooked grey bill with a yellow cere
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。
Common Kestrel
チョウゲンボウ（Falco tinnunculus）— ヨーロッパからアジア、アフリカに広く分布する小型のハヤブサ。ホバリングしながら地上の獲物を探す行動が特徴。