Aleutian Tern vs Fairy Tern
Onychoprion aleuticus 比較対象 Sternula nereis
Side-by-Side Comparison
| 属性 | Aleutian Tern | Fairy Tern |
|---|---|---|
| 学名 | Onychoprion aleuticus | Sternula nereis |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Vulnerable | Vulnerable |
| 体長 | — | — |
| 翼開長 | 52.4 cm (20.6 in) | 35.6 cm (14.0 in) |
| 体重 | 104.88 g (3.70 oz) | 68.5 g (2.42 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Vulnerable
Aleutian Tern
Vulnerable
Fairy 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.
Fairy Tern
Fairy Tern, 22–25 cm, breeds in southern Australia, New Zealand, and New Caledonia on sandy beaches. White and pale grey with an orange-yellow bill; delicate and buoyant in flight. Piscivore; hovers and plunge-dives in shallow coastal and estuarine waters. Vulnerable due to beach disturbance.