Greylag Goose vs Mute Swan
Anser anser 比較対象 Cygnus olor
Side-by-Side Comparison
| 属性 | Greylag Goose | Mute Swan |
|---|---|---|
| 学名 | Anser anser | Cygnus olor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 152.0 cm (59.8 in) |
| 翼開長 | 87.1 cm (34.3 in) | 235.0 cm (92.5 in) |
| 体重 | 3297.5 g (116.32 oz) | 11000.0 g (388.01 oz) |
| 食性 | Eats shoots, seeds, and aquatic plants; takes invertebrates in shallow water; diet varies between coastal … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 一腹卵数 | 3-12 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Greylag Goose
Breeds on moorland, bogs, freshwater wetlands, and lake margins across Eurasia from Iceland to central Asia. Winters on estuaries, agricultural fields, and wetlands. Feral populations year-round in parks.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Greylag Goose
A deep, loud 'aahng' honking. The ancestral goose of domesticated geese; its call is the template for the classic 'goose honk'. Flocks are highly vocal in flight.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Greylag Goose
Breeds across central and northern North America; winters in the southern United States, Mexico, and Central America.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保全状況
Greylag Goose
Mute Swan
How to Tell Them Apart
Greylag Goose
Large and heavy; uniformly gray-brown with pale feather fringes on back. Head and neck grayish-brown. Orange-pink bill; pink legs. Pale gray forewing conspicuous in flight. Ancestor of domestic geese.
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Greylag Goose
ヨーロッパ、ロシアにかけて繁殖し、地中海周辺や南アジアで越冬するガン（体長75〜90cm）。灰褐色の体とオレンジ色の嘴が特徴的。Anser anser（ハイイロガン）は家禽のガチョウの祖先種で、最も大きく最も一般的な旧世界のガン。湿原、農地、川沿いに生息し、植物を主食とする。Anatidae科。
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.