Great Shearwater vs Stejneger's Petrel

Ardenna gravis 比較対象 Pterodroma longirostris

Side-by-Side Comparison

属性 Great Shearwater Stejneger's Petrel
学名 Ardenna gravis Pterodroma longirostris
Procellariiformes Procellariiformes
Procellariidae Procellariidae
保全状況 Least Concern Vulnerable
体長
翼開長 63.6 cm (25.0 in) 42.4 cm (16.7 in)
体重 832.5 g (29.37 oz) 140.5 g (4.96 oz)
食性 -- --
一腹卵数 1 1
Population Trend

Habitat Comparison

共通生息地

None

Great Shearwater only

Stejneger's Petrel only

保全状況

Least Concern

Great Shearwater

Vulnerable

Stejneger's 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。

Stejneger's Petrel

26 cm. Small gadfly petrel; pale grey above with dark M-mark; white below with dark partial collar and carpal bar. Breeds Juan Fernandez Islands (Chile); migrates to North Pacific. Vulnerable; closely related to Cook's Petrel; distinguished by slightly longer bill.

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