Long-tailed Jaeger vs Arctic Jaeger
Stercorarius longicaudus 比較対象 Stercorarius parasiticus
Side-by-Side Comparison
| 属性 | Long-tailed Jaeger | Arctic Jaeger |
|---|---|---|
| 学名 | Stercorarius longicaudus | Stercorarius parasiticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Stercorariidae | Stercorariidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 60.3 cm (23.7 in) | 62.1 cm (24.4 in) |
| 体重 | 315.75 g (11.14 oz) | 459.0 g (16.19 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Long-tailed Jaeger
Least Concern
Arctic 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.
Arctic Jaeger
北極圏で繁殖し、南半球で越冬する海鳥(体長41〜46cm)。褐色の体と尖った細い中央尾羽が特徴。Stercorarius parasiticus(シロハラトウゾクカモメ)は他の海鳥から食べ物を空中で奪う「盗み食い」で有名で、カモメやアジサシを空中で追いかけ、食べ物を吐き出させる。Stercorariidae科。