Townsend's Shearwater vs Balearic Shearwater
Puffinus auricularis 对比 Puffinus mauretanicus
Side-by-Side Comparison
| 属性 | Townsend's Shearwater | Balearic Shearwater |
|---|---|---|
| 学名 | Puffinus auricularis | Puffinus mauretanicus |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保护状况 | Critically Endangered | Critically Endangered |
| 体长 | — | — |
| 翼展 | 44.0 cm (17.3 in) | 48.4 cm (19.1 in) |
| 体重 | 324.0 g (11.43 oz) | 514.8 g (18.16 oz) |
| 食性 | -- | -- |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Critically Endangered
Townsend's Shearwater
Critically Endangered
Balearic Shearwater
About These Birds
Townsend's Shearwater
33–35 cm. Dark above; white below with dark vent and undertail. Breeds Revillagigedo Islands (Mexico); Critically Endangered with fewer than 1,000 pairs. Threatened by introduced cats and rats; strictly nocturnal at colonies. Ranges in eastern Pacific.
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.