Upland Goose vs Mute Swan
Chloephaga picta 比較対象 Cygnus olor
Side-by-Side Comparison
| 属性 | Upland Goose | Mute Swan |
|---|---|---|
| 学名 | Chloephaga picta | 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 | 82.4 cm (32.4 in) | 235.0 cm (92.5 in) |
| 体重 | 2916.0 g (102.86 oz) | 11000.0 g (388.01 oz) |
| 食性 | Grazes grasses and sedges; dabbles for aquatic invertebrates; diet shifts between plant-heavy and invertebrate-heavy phases. | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 一腹卵数 | 5-8 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Upland Goose
Open Patagonian grasslands, steppe, and agricultural pastures in southern Chile and Argentina, including the Falkland Islands. Grazes on short grass. Males aggressively defend territories. Partially migratory.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Upland Goose
Male gives a high, whistled 'whew'; female gives a low, rolling cackle 'ga-ga-ga'. Sexual differences in call are pronounced. Falklands and Patagonian populations highly vocal.
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
Upland Goose
Endemic to New Caledonia and its surrounding islands. Confined to dense rainforest; non-migratory and terrestrial year-round.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保全状況
Upland Goose
Mute Swan
How to Tell Them Apart
Upland Goose
Pronounced dimorphism. Males white with black-barred flanks and white wings with black primaries. Females rufous-brown with black-barred flanks and white belly. Both sexes yellow-orange legs. Grassland species.
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
Upland Goose
マゼランガンは南米南端のパタゴニアとフォークランド諸島に分布するガン科鳥類です。雄は白い頭部と黒白の羽毛、雌は褐色の羽毛が特徴的です。草地や農地に生息し、草を採食します。羊牧場主との競合で駆除されることがあります。
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.