Great Shearwater vs Grey-faced Petrel
Ardenna gravis compared with Pterodroma gouldi
Side-by-Side Comparison
| Attribute | Great Shearwater | Grey-faced Petrel |
|---|---|---|
| Scientific Name | Ardenna gravis | Pterodroma gouldi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 62.6 cm (24.6 in) |
| Weight | 832.5 g (29.37 oz) | 632.0 g (22.29 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Least Concern
Grey-faced 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.
Grey-faced Petrel
43 cm, wingspan 100–105 cm. Dark brown above with grey-brown face; paler underbody. Closely related to Kerguelen and Great-winged petrels. Breeds on rocky islands off northern New Zealand. Ranges in southwestern Pacific; feeds on squid and fish; visits colonies only at night.