Aleutian Tern vs Common Tern

Onychoprion aleuticus 比較対象 Sterna hirundo

Side-by-Side Comparison

属性 Aleutian Tern Common Tern
学名 Onychoprion aleuticus Sterna hirundo
Charadriiformes Charadriiformes
Laridae Laridae
保全状況 Vulnerable Least Concern
体長
翼開長 52.4 cm (20.6 in) 50.7 cm (20.0 in)
体重 104.88 g (3.70 oz) 125.75 g (4.44 oz)
食性 -- --
一腹卵数 1-4 2-3
Population Trend

Habitat Comparison

共通生息地

Aleutian Tern only

None

Common Tern only

None

保全状況

Vulnerable

Aleutian Tern

Least Concern

Common Tern

About These Birds

Aleutian Tern

Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.

Common Tern

北半球全域で繁殖し、南半球で越冬するアジサシ(体長31〜35cm)。白い体に灰色の翼、赤いオレンジ嘴、黒い頭頂部が特徴。Sterna hirundo(アジサシ)は海面に垂直に急降下して小魚を捕食し、キツツキのように鋭い声で鳴く。「シャーン、シャーン」という声とエレガントな飛翔姿で人気。Laridae科。

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