Great Shearwater vs Blue Petrel
Ardenna gravis 对比 Halobaena caerulea
Side-by-Side Comparison
| 属性 | Great Shearwater | Blue Petrel |
|---|---|---|
| 学名 | Ardenna gravis | Halobaena caerulea |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 63.6 cm (25.0 in) | 41.2 cm (16.2 in) |
| 体重 | 832.5 g (29.37 oz) | 201.5 g (7.11 oz) |
| 食性 | -- | -- |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Great Shearwater
Least Concern
Blue 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.
Blue Petrel
蓝鹱是南极和亚南极海域的小型海洋鸟类。体背蓝灰色，腹部白色，翅上具黑色斑纹，尾呈方形。以磷虾和小型鱼类为食，善于在浪尖飞翔觅食。在南大洋岛屿的地洞中繁殖，冬季在南大洋北部海域游荡。