Egyptian Goose vs Black Swan
Alopochen aegyptiaca 比較対象 Cygnus atratus
Side-by-Side Comparison
| 属性 | Egyptian Goose | Black Swan |
|---|---|---|
| 学名 | Alopochen aegyptiaca | Cygnus atratus |
| 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 | 71.2 cm (28.0 in) | 190.0 cm (74.8 in) |
| 体重 | 2021.3333333333333 g (71.30 oz) | 6200.0 g (218.70 oz) |
| 食性 | Feeds on seeds, grasses, and invertebrates; forages on land and water; diet shifts between terrestrial … | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| 一腹卵数 | 5-14 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Egyptian Goose
Native to sub-Saharan Africa and the Nile Valley; also introduced in western Europe. Freshwater margins, agricultural fields, parks, and golf courses. Highly adaptable; common near human habitation.
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Egyptian Goose
A harsh, honking 'haw-haw' from males; females give a reedy, nasal 'kink-kink'. Very vocal and aggressive; pairs call repeatedly near nest sites in African wetlands.
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.
Geographic Range & Migration
Egyptian Goose
Formerly bred in eastern North America; range collapsed in the 19th century. Extinct by 1914; last wild individual shot in 1900.
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
保全状況
Egyptian Goose
Black Swan
How to Tell Them Apart
Egyptian Goose
Pale grayish-brown with chestnut-brown patch around eye and dark chestnut patch on breast center. Wings show large white patch and black-and-green speculum in flight. Pinkish bill and legs. Sexes similar.
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
About These Birds
Egyptian Goose
エジプトガンはアフリカ大陸とナイル川流域原産のガン科鳥類です。茶色と灰色の羽毛に目の周りの赤褐色の斑点が特徴的です。川、湖、湿地、農地に生息し、草、種子、農作物を採食します。ヨーロッパでも帰化個体群が確立しています。
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。