Mexican Duck vs Mute Swan
Anas diazi 比較対象 Cygnus olor
Side-by-Side Comparison
| 属性 | Mexican Duck | Mute Swan |
|---|---|---|
| 学名 | Anas diazi | Cygnus olor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Not Evaluated | Least Concern |
| 体長 | — | 152.0 cm (59.8 in) |
| 翼開長 | — | 235.0 cm (92.5 in) |
| 体重 | 1003.75 g (35.41 oz) | 11000.0 g (388.01 oz) |
| 食性 | Eats fish, molluscs, and aquatic invertebrates; dives in fresh and salt water; diet shifts between … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 一腹卵数 | 1-13 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mexican Duck
Freshwater lakes, marshes, and rivers at 1,000–2,500 m in the highlands of Mexico and the southwestern United States. Uses agricultural ponds and irrigation canals.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Mexican Duck
Female gives a Mallard-like, descending quacking series; male utters a soft, nasal grunt. Vocalizations essentially identical to Mallard; found in Mexican interior wetlands and the Rio Grande.
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
Mexican Duck
Breeds in central and eastern Siberia; winters in East Asia, Southeast Asia, and the East African coast.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保全状況
Mexican Duck
Mute Swan
How to Tell Them Apart
Mexican Duck
Similar to Mottled Duck; mottled brown plumage with pale buff head showing dark crown and eye stripe. Iridescent blue-purple speculum with white borders. Yellow-orange bill. Both sexes similar. SW USA …
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
Mexican Duck
メキシコガモとも呼ばれるこの種は、メキシコ中央高原および米国南西部の湿地や河川に生息する中型のカモです。褐色の羽毛と緑色の嘴が特徴で、マガモと近縁ですが、独立した種として扱われています。生息地の破壊と狩猟圧力により個体数が減少しており、保全が求められています。
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.