Arctic Jaeger vs Pomarine Jaeger
Stercorarius parasiticus 对比 Stercorarius pomarinus
Side-by-Side Comparison
| 属性 | Arctic Jaeger | Pomarine Jaeger |
|---|---|---|
| 学名 | Stercorarius parasiticus | Stercorarius pomarinus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Stercorariidae | Stercorariidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 62.1 cm (24.4 in) | 70.2 cm (27.6 in) |
| 体重 | 459.0 g (16.19 oz) | 760.5 g (26.83 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Arctic Jaeger
Least Concern
Pomarine Jaeger
About These Birds
Arctic Jaeger
短尾贼鸥(约500克)是一种行动敏捷的海鸟,尾羽中央延长,以追逐其他海鸟直到放弃猎物的盗食行为著名。繁殖于北极苔原,在开阔大洋中越冬。以旅鼠(夏季)和偷抢的食物(冬季)为食。无危;在整个分布范围内较为常见。
Pomarine Jaeger
Pomarine Jaeger, 46–51 cm plus twisted spoon-shaped central tail feathers, is the largest of the three small jaegers. Breeds on Russian and Canadian Arctic tundra; lemming-dependent on breeding grounds. Heavily built; pirates food from other seabirds at sea and scavenges at whale carcasses. Pelagic in winter.