Mallard vs アカオノスリ
Anas platyrhynchos 比較対象 Buteo jamaicensis
Side-by-Side Comparison
| 属性 | Mallard | アカオノスリ |
|---|---|---|
| 学名 | Anas platyrhynchos | Buteo jamaicensis |
| 目 | Anseriformes | Accipitriformes |
| 科 | Anatidae | Accipitridae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 58.0 cm (22.8 in) | 53.0 cm (20.9 in) |
| 翼開長 | 90.0 cm (35.4 in) | 124.0 cm (48.8 in) |
| 体重 | 1100.0 g (38.80 oz) | 1080.0 g (38.10 oz) |
| 食性 | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Small to medium mammals, especially voles, mice, and rabbits. Also takes birds, reptiles, and large … |
| 一腹卵数 | 4-18 | 2-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
アカオノスリ
Open country with scattered elevated perches such as trees, poles, and cliffs. Adaptable to farmland, grasslands, roadsides, and suburban areas.
Song & Call Comparison
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.
アカオノスリ
Iconic, raspy descending scream: 'kreeeeee-ar', often used in films for all raptors. Gives short barking 'kak' notes near nest. Juveniles beg with persistent squealing whistles.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
アカオノスリ
North America from Alaska to Panama, including the Caribbean. One of the most common raptors in North America.
保全状況
Mallard
アカオノスリ
How to Tell Them Apart
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
アカオノスリ
Variable plumage from pale to dark morphs. Most adults have rich brown upperparts, a pale breast with a dark belly band, and the characteristic rufous-red tail.
Dark hooked bill with a yellow cere
Key Differences
- • Weight: Red-tailed Hawk (1080g) vs Mallard (1100g)
- • Length: Red-tailed Hawk (53 cm) vs Mallard (58 cm)
- • Wingspan: Red-tailed Hawk (124 cm) vs Mallard (90 cm)
- • Family: Red-tailed Hawk (Accipitridae) vs Mallard (Anatidae)
- • Habitat: Red-tailed Hawk prefers Open country with scattered elevated perches such as trees,; Mallard prefers Nearly any wetland habitat including lakes, rivers, ponds, m
About These Birds
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。
アカオノスリ
The red-tailed hawk is the most widespread and common hawk in North America. Its screaming cry is so iconic that it is often dubbed over bald eagle footage in films and television. These adaptable raptors thrive in human-altered landscapes and are a familiar sight perched along highways.