Lesser Black-backed Gull vs Aleutian Tern
Larus fuscus 对比 Onychoprion aleuticus
Side-by-Side Comparison
| 属性 | Lesser Black-backed Gull | Aleutian Tern |
|---|---|---|
| 学名 | Larus fuscus | Onychoprion aleuticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 82.4 cm (32.4 in) | 52.4 cm (20.6 in) |
| 体重 | 841.3333333333334 g (29.68 oz) | 104.88 g (3.70 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Lesser Black-backed Gull
Vulnerable
Aleutian Tern
About These Birds
Lesser Black-backed Gull
小黑背鸥（约850克）具有深灰色至黑色背部和翅膀、黄色腿和黑色翼尖。繁殖于欧洲西部，部分种群迁徙至非洲和亚洲南部越冬，部分种群留居于城市地区。以鱼类、软体动物和腐肉为食。无危；适应能力强，分布广泛。
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.