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Side-by-Side Comparison

属性	Arctic Tern	Pallas's Gull
学名	Sterna paradisaea	Larus ichthyaetus
目	Charadriiformes	Charadriiformes
科	Laridae	Laridae
保全状況	Least Concern	Least Concern
体長	34.0 cm (13.4 in)	—
翼開長	80.0 cm (31.5 in)	94.2 cm (37.1 in)
体重	110.0 g (3.88 oz)	1413.3333333333333 g (49.85 oz)
食性	Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving.	--
一腹卵数	2-3	1-3
Population Trend	—	—

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Size Comparison

Body Length

Arctic Tern 34.0 cm

Pallas's Gull —

翼開長

Arctic Tern 80.0 cm

Pallas's Gull 94.2 cm

体重

Arctic Tern 110.0 g

Pallas's Gull 1413.3333333333333 g

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Habitat Comparison

共通生息地

🌿 Wetland 🏖️ Coastal

Arctic Tern only

🌾 Grassland

Pallas's Gull only

None

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.

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Song & Call Comparison

Arctic Tern

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.

Pallas's Gull

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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.

Pallas's Gull

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保全状況

Least Concern

Arctic Tern

Least Concern

Pallas's Gull

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How to Tell Them Apart

Arctic Tern

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

Pallas's Gull

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About These Birds

Arctic Tern

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。

Pallas's Gull

Pallas's Gull, 57–61 cm, is the world's largest hooded gull, breeding on Central Asian lakes and wintering in the Indian Ocean. Massive yellow bill with orange tip, black hood with white eye-crescents. Piscivore; plunge-dives and pirates food from other seabirds. Partially migratory.

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Related Comparisons

オカメインコ vs Arctic Tern

look-alike

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