Great Shearwater vs Zino's Petrel
Ardenna gravis compared with Pterodroma madeira
Side-by-Side Comparison
| Attribute | Great Shearwater | Zino's Petrel |
|---|---|---|
| Scientific Name | Ardenna gravis | Pterodroma madeira |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Endangered |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 50.6 cm (19.9 in) |
| Weight | 832.5 g (29.37 oz) | 227.5 g (8.02 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Great Shearwater
Endangered
Zino's 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.
Zino's Petrel
33–36 cm. Small gadfly petrel; grey-brown above with white underparts and partial dark breast-band. Critically Endangered; breeds only on Madeira's high central mountains (fewer than 65 pairs). Threatened by light pollution, introduced predators. Long-distance migrations to Atlantic.