Great Shearwater vs Heinroth's Shearwater
Ardenna gravis 比較対象 Puffinus heinrothi
Side-by-Side Comparison
| 属性 | Great Shearwater | Heinroth's Shearwater |
|---|---|---|
| 学名 | Ardenna gravis | Puffinus heinrothi |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 63.6 cm (25.0 in) | 35.7 cm (14.1 in) |
| 体重 | 832.5 g (29.37 oz) | 82.0 g (2.89 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Great Shearwater
Vulnerable
Heinroth's Shearwater
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。
Heinroth's Shearwater
27 cm. Small dark shearwater; all sooty-brown with pale bill. Breeds Solomon Islands and Papua New Guinea. Critically Endangered; extremely poorly known with only a handful of records. Breeding biology almost completely unknown; one of the rarest and least-studied seabirds.