Great Shearwater vs Bryan's Shearwater
Ardenna gravis مقارنةً بـ Puffinus bryani
Side-by-Side Comparison
| السمة | Great Shearwater | Bryan's Shearwater |
|---|---|---|
| الاسم العلمي | Ardenna gravis | Puffinus bryani |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Least Concern | Critically Endangered |
| الطول | — | — |
| طول الجناح | 63,6 cm (25.0 in) | 33,0 cm (13.0 in) |
| الوزن | 832,5 g (29.37 oz) | 147,0 g (5.19 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Great Shearwater
Critically Endangered
Bryan'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.
Bryan's Shearwater
27 cm. Small shearwater; dark brown above, white below with dark smudging on flanks. Known from only a few specimens collected at Midway Atoll; Critically Endangered or possibly extinct. No confirmed breeding in decades; one of the least-known shearwaters.