Arctic Tern
Sterna paradisaea
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<birdfyi-bird slug="arctic-tern"></birdfyi-bird>Migrating from Arctic breeding grounds to the Antarctic and back, the Arctic Tern experiences two summers each year and ranges across every ocean. Pale grey above and white below with a black cap, blood-red bill, and short red legs, it has deeply forked tail streamers that trail in flight. It catches small fish and crustaceans by plunge-diving, hovering briefly before dropping. Breeding in colonies on coastal and tundra ground, it lays two to three eggs in a simple scrape, incubated for 22 to 27 days, with young fledging at 21 to 24 days. Fiercely defensive at the nest, it gives sharp, grating alarm calls to drive off intruders. The species is classified as Least Concern.
について
キョクアジサシはあらゆる動物の中で最長の渡りを行い、毎年北極と南極を往復する約7万kmの旅をする。30年の寿命の中に、月への往復3回分に相当する飛翔距離を積み重ねる可能性がある。地球上でどの生物よりも多くの昼光を経験するこの驚異的な鳥は、太陽を追い続ける。
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| Body Length | 34.0 cm | 13.4 in |
| 翼開長 | 80.0 cm | 31.5 in |
| 体重 | 110.0 g | 3.88 oz |
識別
羽毛
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.
くちばし
Slender, pointed, bright red bill
Habitat & Range
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.
分布域
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Diet & Feeding
Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving.
保全状況
行動と繁殖
営巣
Nest type: SC. Incubation: 22-27 days. Fledging: 21-24 days.
一腹卵数
2-3
鳴き声
さえずり
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.
分類学
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| 目 | Charadriiformes (Shorebirds & Gulls) |
| 科 | Laridae (Gulls & Terns) |
| Genus | Sterna |
| 種 | Sterna paradisaea |
Names in Other Languages
| Language | Name |
|---|---|
| German | Küstenseeschwalbe |
| Spanish | Charrán Ártico |
Distribution
Arctic Tern has been recorded in 7 countries.
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External Databases
よくある質問
What does the Arctic Tern eat?
Where does the Arctic Tern live?
Is the Arctic Tern endangered?
How does the Arctic Tern nest?
What does the Arctic Tern sound like?
How big is the Arctic Tern?
What order and family does the Arctic Tern belong to?
Similar Birds
Other species in the Laridae family