Belted Kingfisher vs Common Raven
Megaceryle alcyon 比較対象 Corvus corax
Side-by-Side Comparison
| 属性 | Belted Kingfisher | Common Raven |
|---|---|---|
| 学名 | Megaceryle alcyon | Corvus corax |
| 目 | Coraciiformes | Passeriformes |
| 科 | Alcedinidae | Corvidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 33.0 cm (13.0 in) | 63.0 cm (24.8 in) |
| 翼開長 | 53.0 cm (20.9 in) | 130.0 cm (51.2 in) |
| 体重 | 150.0 g (5.29 oz) | 1200.0 g (42.33 oz) |
| 食性 | Primarily small fish caught by plunge-diving from a perch or hover. Also takes crayfish, frogs, … | Omnivorous and opportunistic — carrion, small animals, insects, eggs, grain, fruit, and human refuse. Among … |
| 一腹卵数 | 6-7 | 1-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Belted Kingfisher
Rivers, streams, lakes, ponds, estuaries, and coastlines with clear water and suitable perches. Nests in burrows dug into earthen banks.
Common Raven
Diverse habitats from Arctic tundra to deserts, mountains, forests, and coastlines. Avoids dense urban areas but thrives near human activity.
Song & Call Comparison
Belted Kingfisher
A loud, rattling 'klee-klee-klee-klee' — mechanical and penetrating. Given in flight along rivers. Also a harsh 'kekekek' near nest. Far louder than Common Kingfisher.
Common Raven
Highly varied: deep resonant 'kraa-kraa-kraa', hollow 'tok-tok', liquid 'klonk', and wing-whooshing. Among the most intelligent corvid callers; uses calls contextually in groups.
Geographic Range & Migration
Belted Kingfisher
North America from Alaska and Canada to Central America and the Caribbean. Northern populations migrate south in winter.
Common Raven
Holarctic distribution across North America, Europe, Asia, and North Africa. The most widely distributed corvid.
保全状況
Belted Kingfisher
Common Raven
How to Tell Them Apart
Belted Kingfisher
Blue-grey upperparts with a shaggy crest and a white collar. Males have a single blue-grey breast band; females have an additional rufous belly band.
Long, heavy, straight, dark dagger-like bill
Common Raven
All black with a glossy purplish-blue iridescent sheen. Shaggy throat hackles, long wedge-shaped tail, and large robust build distinguish it from crows.
Large, powerful, curved black bill
About These Birds
Belted Kingfisher
ミヤマカワセミは雌の方が雄よりも派手な色彩を持つという点でユニークで、赤褐色の腹帯が余分に加わっている。これらの騒々しい鳥は独特のガラガラとした鳴き声で縄張りを宣言する。重厚な嘴を使って河岸に最大2.4mもの深さの営巣穴を掘る。
Common Raven
ワタリガラス（Corvus corax）— 北半球に広く分布する最大のスズメ目の鳥。高い知性をもち、道具を使うことや問題解決能力が知られている。