Common Kingfisher vs Rock Pigeon
Alcedo atthis 比較対象 Columba livia
Side-by-Side Comparison
| 属性 | Common Kingfisher | Rock Pigeon |
|---|---|---|
| 学名 | Alcedo atthis | Columba livia |
| 目 | Coraciiformes | Columbiformes |
| 科 | Alcedinidae | Columbidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 17.0 cm (6.7 in) | 33.0 cm (13.0 in) |
| 翼開長 | 25.0 cm (9.8 in) | 68.0 cm (26.8 in) |
| 体重 | 36.0 g (1.27 oz) | 300.0 g (10.58 oz) |
| 食性 | Small fish, aquatic insects, and crustaceans. Hunts from a low perch over water, diving headfirst … | Seeds, grain, fruit, and human food scraps. Primarily a ground feeder. Feral birds are heavily … |
| 一腹卵数 | 3-10 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Kingfisher
Clear, slow-flowing rivers, streams, lakes, and ponds with suitable perching and nesting banks. Requires clean water with good fish populations.
Rock Pigeon
Originally cliff-nesting in Mediterranean regions. Now the quintessential urban bird, inhabiting cities worldwide on every continent.
Song & Call Comparison
Common Kingfisher
A sharp, penetrating 'chee' whistle given in flight, often the first indication of its presence. Short, shrill single note as it darts low over rivers. Contact call is a rippling …
Rock Pigeon
Soft, rhythmic cooing 'roo-c'too-coo' repeated multiple times, with emphasis on second syllable. Male courtship coo is deeper and more persistent. Wing-clapping on takeoff is loud.
Geographic Range & Migration
Common Kingfisher
Widespread across Europe, Asia, and North Africa. Northern populations migrate south in winter.
Rock Pigeon
Native to Europe, North Africa, and South Asia. Feral populations on every continent except Antarctica.
保全状況
Common Kingfisher
Rock Pigeon
How to Tell Them Apart
Common Kingfisher
Brilliant electric blue upperparts and orange underparts. Blue-green crown with darker barring. White throat patch and cheek spots. A flash of blue in flight.
Long, straight, dagger-like dark bill — orange base on the lower mandible in females
Rock Pigeon
Wild-type has a blue-grey body with iridescent green and purple neck feathers, two black wing bars, and a white rump. Feral populations show enormous color variation.
Slender dark bill with a white fleshy cere at the base
About These Birds
Common Kingfisher
カワセミ（Alcedo atthis）— ユーラシアおよびアフリカに広く分布する鮮やかな青橙色の鳥。川や池のほとりで魚を捕食する。
Rock Pigeon
The rock pigeon is the ancestor of all domestic pigeon breeds and one of the most abundant birds in cities worldwide. Pigeons have served humans as messengers, food, and subjects for scientific research — their homing ability and vision have been studied extensively. Darwin's study of pigeon breeding contributed to his theory of evolution.