Great Shearwater vs Mottled Petrel
Ardenna gravis compared with Pterodroma inexpectata
Side-by-Side Comparison
| Attribute | Great Shearwater | Mottled Petrel |
|---|---|---|
| Scientific Name | Ardenna gravis | Pterodroma inexpectata |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 50.0 cm (19.7 in) |
| Weight | 832.5 g (29.37 oz) | 344.0 g (12.13 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Near Threatened
Mottled 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.
Mottled Petrel
33–36 cm. Dark grey above with bold dark M-mark; white below with distinctive dark belly patch. Breeds New Zealand subantarctic islands (Snares, Chatham, Antipodes). Migrates to North Pacific in boreal winter. Near Threatened; feeds on squid and crustaceans.