Great Shearwater vs Trindade Petrel
Ardenna gravis compared with Pterodroma arminjoniana
Side-by-Side Comparison
| Attribute | Great Shearwater | Trindade Petrel |
|---|---|---|
| Scientific Name | Ardenna gravis | Pterodroma arminjoniana |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 56.8 cm (22.4 in) |
| Weight | 832.5 g (29.37 oz) | 371.0 g (13.09 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Vulnerable
Trindade 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.
Trindade Petrel
37–41 cm. Polymorphic; pale morph grey-brown above with white underparts and dark breast-band; dark morph all sooty. Breeds Trindade Island (Brazil) and Round Island (Mauritius). Ranges in tropical Atlantic and Indian oceans; feeds on squid and flying fish.