Great Shearwater vs Rapa Shearwater
Ardenna gravis в сравнении с Puffinus myrtae
Side-by-Side Comparison
| Характеристика | Great Shearwater | Rapa Shearwater |
|---|---|---|
| Научное название | Ardenna gravis | Puffinus myrtae |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Least Concern | Critically Endangered |
| Длина | — | — |
| Размах крыльев | 63,6 cm (25.0 in) | 48,2 cm (19.0 in) |
| Масса | 832,5 g (29.37 oz) | 237,5 g (8.38 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Least Concern
Great Shearwater
Critically Endangered
Rapa 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.
Rapa Shearwater
30–33 cm. Dark above; white below. Breeds Rapa Island (French Polynesia). Critically Endangered with a very small population on a single island. Poorly known; threatened by introduced predators. Ranges in central south Pacific; one of the rarest shearwaters.