Great Shearwater vs Pycroft's Petrel
Ardenna gravis 对比 Pterodroma pycrofti
Side-by-Side Comparison
| 属性 | Great Shearwater | Pycroft's Petrel |
|---|---|---|
| 学名 | Ardenna gravis | Pterodroma pycrofti |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 63.6 cm (25.0 in) | 42.8 cm (16.9 in) |
| 体重 | 832.5 g (29.37 oz) | 156.5 g (5.52 oz) |
| 食性 | -- | -- |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Great Shearwater
Vulnerable
Pycroft'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.
Pycroft's Petrel
26–28 cm. Small; pale grey above with dark M-mark; white underparts with partial dark collar. Breeds small islands off northern New Zealand (Poor Knights, Hen & Chickens). Vulnerable; migrates to North Pacific. Feeds on squid and fish; nocturnal at colonies; threatened by rats.