Great Shearwater vs Boyd's Shearwater
Ardenna gravis 比較対象 Puffinus boydi
Side-by-Side Comparison
| 属性 | Great Shearwater | Boyd's Shearwater |
|---|---|---|
| 学名 | Ardenna gravis | Puffinus boydi |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 63.6 cm (25.0 in) | — |
| 体重 | 832.5 g (29.37 oz) | — |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Great Shearwater
Not Evaluated
Boyd'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。
Boyd's Shearwater
27 cm. Dark brown above; white below; white face with dark eye-patch. Breeds Cape Verde Islands. Ranges in tropical east Atlantic. Closely related to Barolo Shearwater; both formerly grouped in Little Shearwater complex. Near Threatened; feeds on small fish and squid.