Great Shearwater vs Heinroth's Shearwater
Ardenna gravis مقارنةً بـ Puffinus heinrothi
Side-by-Side Comparison
| السمة | Great Shearwater | Heinroth's Shearwater |
|---|---|---|
| الاسم العلمي | Ardenna gravis | Puffinus heinrothi |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Least Concern | Vulnerable |
| الطول | — | — |
| طول الجناح | 63,6 cm (25.0 in) | 35,7 cm (14.1 in) |
| الوزن | 832,5 g (29.37 oz) | 82,0 g (2.89 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Great Shearwater
Vulnerable
Heinroth'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.
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.