Great Shearwater vs Boyd's Shearwater
Ardenna gravis compared with Puffinus boydi
Side-by-Side Comparison
| Attribute | Great Shearwater | Boyd's Shearwater |
|---|---|---|
| Scientific Name | Ardenna gravis | Puffinus boydi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | — |
| Weight | 832.5 g (29.37 oz) | — |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Not Evaluated
Boyd's 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.
Boyd's Shearwater
27 cm. Dark brown above; white below; white face with dark eye-patch. Breeds Cape Verde Islands. Ranges in tropical east Atlantic. Closely related to Barolo Shearwater; both formerly grouped in Little Shearwater complex. Near Threatened; feeds on small fish and squid.