Great Shearwater vs Streaked Shearwater
Ardenna gravis compared with Calonectris leucomelas
Side-by-Side Comparison
| Attribute | Great Shearwater | Streaked Shearwater |
|---|---|---|
| Scientific Name | Ardenna gravis | Calonectris leucomelas |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 63.8 cm (25.1 in) |
| Weight | 832.5 g (29.37 oz) | 530.5 g (18.71 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Near Threatened
Streaked 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.
Streaked Shearwater
48 cm, wingspan 122 cm. Large shearwater; brown-streaked white head and neck; brown above, white below. Breeds Japan and islands of East Asia; migrates south to Australia and Indian Ocean. Feeds on fish and squid; forms large flocks; the most abundant shearwater in NW Pacific.