Townsend's Shearwater vs Heinroth's Shearwater
Puffinus auricularis ile kıyaslandığında Puffinus heinrothi
Side-by-Side Comparison
| Özellik | Townsend's Shearwater | Heinroth's Shearwater |
|---|---|---|
| Bilimsel Ad | Puffinus auricularis | Puffinus heinrothi |
| Takım | Procellariiformes | Procellariiformes |
| Familya | Procellariidae | Procellariidae |
| Koruma Durumu | Critically Endangered | Vulnerable |
| Uzunluk | — | — |
| Kanat Açıklığı | 44,0 cm (17.3 in) | 35,7 cm (14.1 in) |
| Ağırlık | 324,0 g (11.43 oz) | 82,0 g (2.89 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 1 | -- |
| Population Trend | — | — |
Koruma Durumu
Critically Endangered
Townsend's Shearwater
Vulnerable
Heinroth's 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.
Heinroth's Shearwater
27 cm. Small dark shearwater; all sooty-brown with pale bill. Breeds Solomon Islands and Papua New Guinea. Critically Endangered; extremely poorly known with only a handful of records. Breeding biology almost completely unknown; one of the rarest and least-studied seabirds.