Buller's Shearwater vs Great Shearwater
Ardenna bulleri comparado con Ardenna gravis
Side-by-Side Comparison
| Atributo | Buller's Shearwater | Great Shearwater |
|---|---|---|
| Nombre científico | Ardenna bulleri | Ardenna gravis |
| Orden | Procellariiformes | Procellariiformes |
| Familia | Procellariidae | Procellariidae |
| Estado de conservación | Vulnerable | Least Concern |
| Longitud | — | — |
| Envergadura | 55,2 cm (21.7 in) | 63,6 cm (25.0 in) |
| Peso | 388,5 g (13.70 oz) | 832,5 g (29.37 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Ninguno
Buller's Shearwater only
Great Shearwater only
Estado de conservación
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.