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Side-by-Side Comparison

属性	Arctic Tern	Indian Skimmer
学名	Sterna paradisaea	Rynchops albicollis
目	Charadriiformes	Charadriiformes
科	Laridae	Laridae
保护状况	Least Concern	Endangered
体长	34.0 cm (13.4 in)	—
翼展	80.0 cm (31.5 in)	74.4 cm (29.3 in)
体重	110.0 g (3.88 oz)	164.0 g (5.78 oz)
食性	Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving.	--
产卵数	2-3	2-5
Population Trend	—	—

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Size Comparison

Body Length

Arctic Tern 34.0 cm

Indian Skimmer —

翼展

Arctic Tern 80.0 cm

Indian Skimmer 74.4 cm

体重

Arctic Tern 110.0 g

Indian Skimmer 164.0 g

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Habitat Comparison

共同栖息地

🌿 Wetland 🏖️ Coastal

Arctic Tern only

🌾 Grassland

Indian Skimmer only

无

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

鸣唱

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.

Indian Skimmer

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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.

Indian Skimmer

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保护状况

Least Concern

Arctic Tern

Endangered

Indian Skimmer

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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.

喙

Slender, pointed, bright red bill

Indian Skimmer

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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。

Indian Skimmer

Indian Skimmer: 38–43 cm, black-and-white skimmer with an orange-and-yellow bill and white collar. Resident on large sandy rivers of the Indian subcontinent. VU. Feeds by skimming river surface with protruding lower mandible to catch fish. Severely threatened by sand-mining, dam building, and human disturbance at nesting colonies.

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Related Comparisons

雞尾鸚鵡 vs Arctic Tern

look-alike

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