Great Shearwater vs Juan Fernandez Petrel
Ardenna gravis в сравнении с Pterodroma externa
Side-by-Side Comparison
| Характеристика | Great Shearwater | Juan Fernandez Petrel |
|---|---|---|
| Научное название | Ardenna gravis | Pterodroma externa |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Least Concern | Vulnerable |
| Длина | — | — |
| Размах крыльев | 63,6 cm (25.0 in) | 58,3 cm (23.0 in) |
| Масса | 832,5 g (29.37 oz) | 432,5 g (15.26 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Least Concern
Great Shearwater
Vulnerable
Juan Fernandez 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.
Juan Fernandez Petrel
43 cm, wingspan 97 cm. Large; dark grey-brown above with white nape and underparts; dark carpal bar and partial collar. Breeds Juan Fernandez Islands (Chile); ranges across subtropical Pacific. Vulnerable due to small breeding range; feeds on fish and squid.