Scaups, Pochards, And Allies
探検鳥類
Scaups, Pochards, And Allies
aythya
The genus Aythya contains the diving ducks, commonly known as scaups, pochards, and canvasbacks. Unlike dabbling ducks, these hardy waterfowl are built for deep water, often congregating in massive flocks called rafts on large lakes, estuaries, and coastal bays. They are powerful swimmers and expert divers, plunging deep beneath the surface to forage for aquatic plants, mollusks, and insects. Their broad, heavy bills and densely packed feathers are perfectly adapted for a life spent on the move across expansive waterways. Globally distributed, these birds are highly migratory, navigating vast flyways during autumn and spring. Watching a raft of scaups or pochards dive in near-perfect synchronization is one of the most spectacular sights of winter birdwatching.
生息地: Found on large, deep freshwater lakes, slow-moving rivers, brackish estuaries, and sheltered coastal bays.
外見
Rounded heads, sloping bills, and stocky bodies are characteristic of this group. Males often showcase striking patterns of black, white, gray, or rich chestnut-red on their heads and breasts, whereas females exhibit drabber, cryptically colored brown plumages for nesting camouflage. Their wings feature a prominent pale stripe, visible in flight, and their large webbed feet are positioned far back on the body, which aids in powerful swimming but makes walking on land awkward.
界Animalia門Chordata綱Aves目Anseriformes科Anatidae
カテゴリ
鳥類レア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
Diving ducks like scaups and pochards cannot easily take off directly from the water's surface; instead, they must run across the water to build up enough speed for flight.
Some species of Aythya are known to practice brood parasitism, laying their eggs in the nests of other duck species to be raised by unsuspecting foster parents.
The Canvasback (Aythya valisineria) has a scientific species name derived from its favorite food, wild celery (Vallisneria americana).
To stay warm in freezing winter waters, these ducks compress their feathers to trap a thin layer of insulating air against their skin, which also helps control their buoyancy.
特殊能力
能力
Hydrodynamic Diving
Dense bones and heavy plumage reduce buoyancy, allowing these ducks to dive easily to depths of up to six meters.
能力
Saltwater Filtration
Specialized supraorbital glands filter excess salt from brackish water, enabling them to winter in coastal marine bays.
能力
Rapid-Wingbeat Flight
Compact wings and powerful pectoral muscles allow them to achieve exceptionally fast, direct flight during long-distance migrations.
サイズと詳細
- 長さ
- 38-56 cm
- 翼開長
- 60-85 cm
- 体重
- 0.5-1.6 kg
- 寿命
- 10-22 年
- Top Speed
- 110 km/h
- 一度の産卵数
- 6-14
- 抱卵期間
- 22-28 日
- 渡りの距離
- 3000 km
食性と食事
Diving ducks in this genus primarily feed by submerging completely, consuming aquatic plants, seeds, mollusks, insects, and small fish.
年齢による違い: Ducklings eat mostly insects and aquatic invertebrates for high protein, transitioning to more plant matter as they mature.
主な食物
- Aquatic vegetation
- Zebra mussels
- Clams
- Aquatic insect larvae
- Submerged seeds
採餌方法
- Foraging
生態系とのつながり
eaten by
Red Fox
Vulpes vulpes
Foxes prey upon nesting females, ducklings, and eggs in shoreline nests.
hunts
Zebra Mussel
Dreissena polymorpha
Scaups and pochards dive deep to forage on these invasive bivalves, helping control their populations.
competitor
Eurasian Coot
Fulica atra
Competes for food resources like submerged vegetation and macroinvertebrates in shared wetland habitats.
特徴
このオブジェクトにはまだ特徴バッジが割り当てられていません。
別名
まだ別名はありません。
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Scaups, Pochards, And Alliesを見分けるには？
Scaups, Pochards, And Alliesを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Scaups, Pochards, And Alliesの長さは何ですか？
38-56 cm
Scaups, Pochards, And Alliesの翼開長は何ですか？
60-85 cm
Scaups, Pochards, And Alliesの体重は何ですか？
0.5-1.6 kg
Scaups, Pochards, And Alliesの寿命は何ですか？
10-22 年
Scaups, Pochards, And Alliesのtop Speedは何ですか？
110 km/h
Scaups, Pochards, And Alliesは何を食べますか？
Diving ducks in this genus primarily feed by submerging completely, consuming aquatic plants, seeds, mollusks, insects, and small fish.
Scaups, Pochards, And Alliesは通常どこに生息していますか？
Found on large, deep freshwater lakes, slow-moving rivers, brackish estuaries, and sheltered coastal bays.
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