Great Shearwater vs Snow Petrel
Ardenna gravis 比較対象 Pagodroma nivea
Side-by-Side Comparison
| 属性 | Great Shearwater | Snow Petrel |
|---|---|---|
| 学名 | Ardenna gravis | Pagodroma nivea |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 63.6 cm (25.0 in) | 49.5 cm (19.5 in) |
| 体重 | 832.5 g (29.37 oz) | 386.0 g (13.62 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Great Shearwater
Least Concern
Snow Petrel
About These Birds
Great Shearwater
全長43〜51cm、翼開長105〜122cm。大型；上面は暗褐色、下面は白く、暗色の帽子と特徴的な翼上面の鱗状模様を持つ。トリスタン・ダ・クーニャ、ゴフ、フォークランド諸島で繁殖し、北大西洋へ渡る。魚や烏賊を食べる；繁殖後の渡りでは英国沿岸を大群が通過する光景が見事。
Snow Petrel
30–35 cm, wingspan 75–95 cm. Entirely snow-white plumage; black bill, eyes, and feet. Nests in rock crevices deep in Antarctica, among the southernmost breeding birds on Earth. Feeds on krill and fish under pack ice. Highly territorial at nest; secretes stomach oil as defence.