Great Shearwater vs Beck's Petrel
Ardenna gravis مقارنةً بـ Pseudobulweria becki
Side-by-Side Comparison
| السمة | Great Shearwater | Beck's Petrel |
|---|---|---|
| الاسم العلمي | Ardenna gravis | Pseudobulweria becki |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Least Concern | Critically Endangered |
| الطول | — | — |
| طول الجناح | 63,6 cm (25.0 in) | 47,6 cm (18.7 in) |
| الوزن | 832,5 g (29.37 oz) | 185,0 g (6.53 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Great Shearwater
Critically Endangered
Beck's Petrel
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.
Beck's Petrel
29 cm. Small; dark brown above and on breast; white belly. Critically Endangered; known from only two specimens collected 1928–1929 in the Solomon Islands and Bismarck Sea. No confirmed breeding site. Possibly nests on remote Pacific islands; one of the world's least-known birds.