Aleutian Tern vs Sooty Tern
Onychoprion aleuticus 对比 Onychoprion fuscatus
Side-by-Side Comparison
| 属性 | Aleutian Tern | Sooty Tern |
|---|---|---|
| 学名 | Onychoprion aleuticus | Onychoprion fuscatus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 52.4 cm (20.6 in) | 56.1 cm (22.1 in) |
| 体重 | 104.88 g (3.70 oz) | 183.0 g (6.46 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-4 | 1 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Vulnerable
Aleutian Tern
Least Concern
Sooty 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.
Sooty Tern
Sooty Tern is a highly pelagic tern, 33–36 cm, wingspan 82–94 cm, breeding pantropically on oceanic islands. Jet-black above, white below, with a white forehead patch. Among the most aerial of birds; rarely lands on water. Piscivore; snaps fish and squid at the surface during mass prey events.