Long-tailed Jaeger vs Pomarine Jaeger
Stercorarius longicaudus в сравнении с Stercorarius pomarinus
Side-by-Side Comparison
| Характеристика | Long-tailed Jaeger | Pomarine Jaeger |
|---|---|---|
| Научное название | Stercorarius longicaudus | Stercorarius pomarinus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Stercorariidae | Stercorariidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 60,3 cm (23.7 in) | 70,2 cm (27.6 in) |
| Масса | 315,75 g (11.14 oz) | 760,5 g (26.83 oz) |
| Питание | -- | -- |
| Размер кладки | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Long-tailed Jaeger only
Нет
Pomarine Jaeger only
Охранный статус
Least Concern
Long-tailed Jaeger
Least Concern
Pomarine Jaeger
About These Birds
Long-tailed Jaeger
Long-tailed Jaeger, 48–53 cm body plus up to 25 cm tail streamers, is the most elegant jaeger, breeding on Arctic and sub-Arctic tundra worldwide. Feeds primarily on lemmings on the breeding grounds; transitions to pelagic planktivore and piscivore on the ocean. Migrates to subantarctic waters — one of the longest migrations.
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.