Audouin's Gull vs Aleutian Tern
Larus audouinii 对比 Onychoprion aleuticus
Side-by-Side Comparison
| 属性 | Audouin's Gull | Aleutian Tern |
|---|---|---|
| 学名 | Larus audouinii | Onychoprion aleuticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Vulnerable | Vulnerable |
| 体长 | — | — |
| 翼展 | 78.9 cm (31.1 in) | 52.4 cm (20.6 in) |
| 体重 | 610.5 g (21.53 oz) | 104.88 g (3.70 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-4 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Vulnerable
Audouin's Gull
Vulnerable
Aleutian Tern
About These Birds
Audouin's Gull
Audouin's Gull, 44–48 cm, is a Near Threatened Mediterranean endemic, breeding mainly in the western basin. Coral-red bill with black and yellow band, grey mantle. Primarily piscivore; forages at sea at dusk for anchovies. Population recovered from 1,000 to over 20,000 pairs; now threatened by fishing bycatch.
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.