Great Shearwater vs Bryan's Shearwater
Ardenna gravis в сравнении с Puffinus bryani
Side-by-Side Comparison
| Характеристика | Great Shearwater | Bryan's Shearwater |
|---|---|---|
| Научное название | Ardenna gravis | Puffinus bryani |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Least Concern | Critically Endangered |
| Длина | — | — |
| Размах крыльев | 63,6 cm (25.0 in) | 33,0 cm (13.0 in) |
| Масса | 832,5 g (29.37 oz) | 147,0 g (5.19 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
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.