Great Black-backed Gull vs Aleutian Tern
Larus marinus 对比 Onychoprion aleuticus
Side-by-Side Comparison
| 属性 | Great Black-backed Gull | Aleutian Tern |
|---|---|---|
| 学名 | Larus marinus | Onychoprion aleuticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 95.6 cm (37.6 in) | 52.4 cm (20.6 in) |
| 体重 | 1678.3333333333333 g (59.20 oz) | 104.88 g (3.70 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Great Black-backed Gull
Vulnerable
Aleutian Tern
About These Birds
Great Black-backed Gull
大黑背鸥（约1.8公斤）是体型最大的鸥类，具有黑色翅膀和背部、白色体部。分布于北大西洋沿岸。以鱼类、软体动物、腐肉甚至其他海鸟和蛋为食的凶猛掠食者和食腐动物。无危；在部分沿海地区种群数量有所增加，对其他海鸟繁殖群构成影响。
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.