Great Shearwater vs Henderson Petrel
Ardenna gravis в сравнении с Pterodroma atrata
Side-by-Side Comparison
| Характеристика | Great Shearwater | Henderson Petrel |
|---|---|---|
| Научное название | Ardenna gravis | Pterodroma atrata |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Least Concern | Endangered |
| Длина | — | — |
| Размах крыльев | 63,6 cm (25.0 in) | 59,0 cm (23.2 in) |
| Масса | 832,5 g (29.37 oz) | 320,0 g (11.29 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Least Concern
Great Shearwater
Endangered
Henderson 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.
Henderson Petrel
36–38 cm. All-dark gadfly petrel; sooty-brown with slightly paler primary patch below. Breeds Henderson Island (Pitcairn Islands). Endangered; population estimated at 5,000–10,000 pairs but vulnerable to introduced rats. Ranges in South Pacific; feeds at night on squid.