Great Shearwater vs Tahiti Petrel
Ardenna gravis compared with Pseudobulweria rostrata
Side-by-Side Comparison
| Attribute | Great Shearwater | Tahiti Petrel |
|---|---|---|
| Scientific Name | Ardenna gravis | Pseudobulweria rostrata |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 56.5 cm (22.2 in) |
| Weight | 832.5 g (29.37 oz) | 410.5 g (14.48 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Near Threatened
Tahiti 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.
Tahiti Petrel
38–40 cm. Large, compact petrel; dark brown above with slightly paler head; whitish belly contrasting with dark breast. Breeds French Polynesia and New Caledonia; ranges in tropical Pacific. Feeds on squid and fish; Near Threatened; populations affected by introduced predators.