Stejneger's Petrel vs Balearic Shearwater
Pterodroma longirostris 对比 Puffinus mauretanicus
Side-by-Side Comparison
| 属性 | Stejneger's Petrel | Balearic Shearwater |
|---|---|---|
| 学名 | Pterodroma longirostris | Puffinus mauretanicus |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保护状况 | Vulnerable | Critically Endangered |
| 体长 | — | — |
| 翼展 | 42.4 cm (16.7 in) | 48.4 cm (19.1 in) |
| 体重 | 140.5 g (4.96 oz) | 514.8 g (18.16 oz) |
| 食性 | -- | -- |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Vulnerable
Stejneger's Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Stejneger's Petrel
26 cm. Small gadfly petrel; pale grey above with dark M-mark; white below with dark partial collar and carpal bar. Breeds Juan Fernandez Islands (Chile); migrates to North Pacific. Vulnerable; closely related to Cook's Petrel; distinguished by slightly longer bill.
Balearic Shearwater
30–38 cm. Brown above; variably dirty-white to brown below; often shows brown smudging on flanks. Breeds only Balearic Islands, Spain. Critically Endangered with fewer than 3,000 pairs; faces extinction. Migrates to NE Atlantic; threatened by predators, fishing bycatch, and tourist development.