South Polar Skua vs Pomarine Jaeger
Catharacta maccormicki so với Stercorarius pomarinus
Side-by-Side Comparison
| Thuộc Tính | South Polar Skua | Pomarine Jaeger |
|---|---|---|
| Tên Khoa Học | Catharacta maccormicki | Stercorarius pomarinus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Stercorariidae | Stercorariidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 77,4 cm (30.5 in) | 70,2 cm (27.6 in) |
| Khối Lượng | 1315,0 g (46.39 oz) | 760,5 g (26.83 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
South Polar Skua only
Không
Pomarine Jaeger only
Tình Trạng Bảo Tồn
Least Concern
South Polar Skua
Least Concern
Pomarine Jaeger
About These Birds
South Polar Skua
South Polar Skua, 50–55 cm, breeds on the Antarctic continent — one of the world's most southerly breeding birds, recorded at the South Pole. Strong migratory; winters in the North Pacific and North Atlantic, crossing the equator. Polymorphic; feeds on penguins, fish, and krill. Circumglobal migration.
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.