Ruddy Duck
Oxyura jamaicensis
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について
北米で繁殖し、中米・南米北部で越冬する小型の潜水ガモ(体長35〜43cm)。雄の繁殖羽は栗色の体に白い頬、青い嘴が特徴的。Oxyura jamaicensis(ルディダック)は特徴的な扇状の尾羽を立てる姿勢で知られる。北米原産だがヨーロッパに移入・定着し、近縁のフェルギネオウ・ホワイトヘッドダックとの交雑が問題となっている。Anatidae科。
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| 翼開長 | 27.9 cm | 11.0 in |
| 体重 | 586.6666666666666 g | 20.69 oz |
識別
羽毛
Breeding male has vivid rufous-chestnut body, black crown, white cheeks, and bright sky-blue bill; stiff tail often cocked upright. Female is dull brown with pale cheek crossed by single dark stripe.
Habitat & Range
分布域
Breeds across interior North America from western Canada south to Mexico. Winters on coasts and inland waters south to northern South America.
Diet & Feeding
Dives for aquatic plant seeds, roots, and invertebrates in freshwater marshes. Uses stiff tail as rudder while swimming underwater.
保全状況
行動と繁殖
営巣
Nest type: CP. Incubation: 24-26 days. Fledging: 50-55 days.
一腹卵数
5-15
鳴き声
さえずり
Male produces a mechanical, drumming bok-bok-bok staccato beat; female gives a harsh, nasal quack. The male's rapid drum-roll call on the bill during display is startlingly loud and distinctive.
分類学
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| 目 | Anseriformes (Waterfowl) |
| 科 | Anatidae (Ducks, Geese & Swans) |
| Genus | Oxyura |
| 種 | Oxyura jamaicensis |
Distribution
Ruddy Duck has been recorded in 27 countries.
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External Databases
よくある質問
What does the Ruddy Duck eat?
Where does the Ruddy Duck live?
Is the Ruddy Duck endangered?
How does the Ruddy Duck nest?
What does the Ruddy Duck sound like?
How big is the Ruddy Duck?
What order and family does the Ruddy Duck belong to?
Similar Birds
Other species in the Anatidae family