Common Pochard vs Mallard
Aythya ferina 比較対象 Anas platyrhynchos
Side-by-Side Comparison
| 属性 | Common Pochard | Mallard |
|---|---|---|
| 学名 | Aythya ferina | Anas platyrhynchos |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | 58.0 cm (22.8 in) |
| 翼開長 | 41.7 cm (16.4 in) | 90.0 cm (35.4 in) |
| 体重 | 845.5 g (29.82 oz) | 1100.0 g (38.80 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow water; diet dominated by hard-shelled benthic … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 一腹卵数 | 3-22 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Pochard
Breeds on freshwater lakes and marshes with emergent vegetation across Eurasia from Iceland and western Europe east to Siberia. Winters on large open lakes, reservoirs, and estuaries.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Common Pochard
Male emits a soft, wheezing purr; female gives a harsh, grating quacking series. The male's gentle, sibilant purring contrasts with the female's loud, grating call on European and Asian lakes.
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Geographic Range & Migration
Common Pochard
Breeds across northern and central North America; winters in Mexico, Central America, and along both US coasts.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
保全状況
Common Pochard
Mallard
How to Tell Them Apart
Common Pochard
Males have chestnut-red head and neck; black breast; pale gray body; black undertail. Red eye. Blue-gray bill with dark base and tip. Females brown with pale face and eye-ring. Gray …
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
About These Birds
Common Pochard
ホシハジロはユーラシアに繁殖し、地中海地方やアジア南部で越冬する潜水性カモです。雄は栗色の頭部、黒い胸、灰色の体が特徴的です。日本では冬鳥として全国の湖沼や内湾に飛来します。水に潜って水草の根や茎、貝類などを採食します。
Mallard
世界で最も一般的なカモ。雄は光沢のある緑色の頭、白い首輪、栗色の胸が特徴。体長50〜65cm。ほぼ世界中の湖、川、池、湿地に生息。雑食性で植物や無脊椎動物を食べる。多くの家禽カモの祖先。低危険種。