Arctic Tern vs Common Kingfisher
Sterna paradisaea 对比 Alcedo atthis
Side-by-Side Comparison
| 属性 | Arctic Tern | Common Kingfisher |
|---|---|---|
| 学名 | Sterna paradisaea | Alcedo atthis |
| 目 | Charadriiformes | Coraciiformes |
| 科 | Laridae | Alcedinidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 34.0 cm (13.4 in) | 17.0 cm (6.7 in) |
| 翼展 | 80.0 cm (31.5 in) | 25.0 cm (9.8 in) |
| 体重 | 110.0 g (3.88 oz) | 36.0 g (1.27 oz) |
| 食性 | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Small fish, aquatic insects, and crustaceans. Hunts from a low perch over water, diving headfirst … |
| 产卵数 | 2-3 | 3-10 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Arctic Tern
Breeds on coastal and tundra habitats. Spends most of its life at sea over the open ocean. Nests in colonies on beaches and rocky shores.
Common Kingfisher
Clear, slow-flowing rivers, streams, lakes, and ponds with suitable perching and nesting banks. Requires clean water with good fish populations.
Song & Call Comparison
Arctic Tern
A sharp, grating 'kree-yah' alarm call. Also gives 'kik-kik-kik' near the nest. Highly aggressive vocally during the Arctic breeding season. Calls are harsh and insistent.
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 …
Geographic Range & Migration
Arctic Tern
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Common Kingfisher
Widespread across Europe, Asia, and North Africa. Northern populations migrate south in winter.
保护状况
Arctic Tern
Common Kingfisher
How to Tell Them Apart
Arctic Tern
Pale grey upperparts, white underparts with a black cap. Blood-red bill and short red legs. Deeply forked tail streamers. Winter adults lose the full black cap.
Slender, pointed, bright red bill
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
About These Birds
Arctic Tern
北极燕鸥进行所有动物中最长的迁徙，每年从北极繁殖地飞往南极越冬地，往返距离超过70,000公里。体型纤细，翼展约80厘米，全身主要为白色，具黑色头冠和红色喙。无危；繁殖于北极和亚北极海岸及岛屿，全球种群约200万只。
Common Kingfisher
普通翠鸟（Alcedo atthis）— 广泛分布于欧亚大陆和非洲的亮蓝橙色鸟类。栖息于溪流和池塘旁，以鱼类为食。