Aleutian Tern vs Peruvian Tern
Onychoprion aleuticus 比較対象 Sternula lorata
Side-by-Side Comparison
| 属性 | Aleutian Tern | Peruvian Tern |
|---|---|---|
| 学名 | Onychoprion aleuticus | Sternula lorata |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Vulnerable | Endangered |
| 体長 | — | — |
| 翼開長 | 52.4 cm (20.6 in) | 34.7 cm (13.7 in) |
| 体重 | 104.88 g (3.70 oz) | 52.0 g (1.83 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Vulnerable
Aleutian Tern
Endangered
Peruvian 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.
Peruvian Tern
Peruvian Tern, 23–25 cm, is an Endangered tern restricted to the Humboldt Current coastline of Peru and northern Chile. White forehead, yellow bill, grey above. Breeds on barren coastal deserts and fishmeal industry areas. Severely threatened by habitat disturbance and introduced predators.