Arctic Jaeger vs Pomarine Jaeger
Stercorarius parasiticus so với Stercorarius pomarinus
Side-by-Side Comparison
| Thuộc Tính | Arctic Jaeger | Pomarine Jaeger |
|---|---|---|
| Tên Khoa Học | Stercorarius parasiticus | Stercorarius pomarinus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Stercorariidae | Stercorariidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 62,1 cm (24.4 in) | 70,2 cm (27.6 in) |
| Khối Lượng | 459,0 g (16.19 oz) | 760,5 g (26.83 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Arctic Jaeger only
Không
Pomarine Jaeger only
Tình Trạng Bảo Tồn
Least Concern
Arctic Jaeger
Least Concern
Pomarine Jaeger
About These Birds
Arctic Jaeger
Arctic Jaeger (Parasitic Jaeger), 41–46 cm plus tail, is the commonest jaeger, breeding across Arctic tundra and wintering in tropical and subtropical seas. Highly piratical; pursues terns and gulls relentlessly to steal fish. Polymorphic: pale and dark morphs occur. Circumglobal migration through all oceans.
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.