Great Shearwater vs Cory's Shearwater
Ardenna gravis مقارنةً بـ Calonectris borealis
Side-by-Side Comparison
| السمة | Great Shearwater | Cory's Shearwater |
|---|---|---|
| الاسم العلمي | Ardenna gravis | Calonectris borealis |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 63,6 cm (25.0 in) | 69,4 cm (27.3 in) |
| الوزن | 832,5 g (29.37 oz) | 787,5 g (27.78 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Great Shearwater
Least Concern
Cory's Shearwater
About These Birds
Great Shearwater
43–51 cm, wingspan 105–122 cm. Large; dark brown above with white underparts, dark cap, and distinctive scaly pattern on upperwing. Breeds Tristan da Cunha, Gough, and Falklands; migrates to North Atlantic. Feeds on fish and squid; spectacular post-breeding migration past UK coasts.
Cory's Shearwater
46–56 cm, wingspan 112–126 cm. Large shearwater; greyish-brown above with yellowish bill; white below with pale underwing. Breeds Macaronesia (Azores, Canaries, Madeira). Migrates across Atlantic to South Atlantic wintering grounds. Feeds on fish and squid; follows fishing vessels.