Buller's Shearwater vs Great Shearwater
Ardenna bulleri в сравнении с Ardenna gravis
Side-by-Side Comparison
| Характеристика | Buller's Shearwater | Great Shearwater |
|---|---|---|
| Научное название | Ardenna bulleri | Ardenna gravis |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Vulnerable | Least Concern |
| Длина | — | — |
| Размах крыльев | 55,2 cm (21.7 in) | 63,6 cm (25.0 in) |
| Масса | 388,5 g (13.70 oz) | 832,5 g (29.37 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Нет
Buller's Shearwater only
Great Shearwater only
Охранный статус
Vulnerable
Buller's Shearwater
Least Concern
Great Shearwater
About These Birds
Buller's Shearwater
46–47 cm, wingspan 96–99 cm. Distinctive; dark above with grey-white M-mark on upperwing; white below with grey cap. Breeds only Snares and Poor Knights Islands, New Zealand. Migrates to North Pacific. Near Threatened; feeds on fish and squid; gregarious at sea.
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.