Heinroth's Shearwater vs Black-vented Shearwater
Puffinus heinrothi مقارنةً بـ Puffinus opisthomelas
Side-by-Side Comparison
| السمة | Heinroth's Shearwater | Black-vented Shearwater |
|---|---|---|
| الاسم العلمي | Puffinus heinrothi | Puffinus opisthomelas |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Vulnerable | Near Threatened |
| الطول | — | — |
| طول الجناح | 35,7 cm (14.1 in) | 46,6 cm (18.3 in) |
| الوزن | 82,0 g (2.89 oz) | 420,5833333333333 g (14.84 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Vulnerable
Heinroth's Shearwater
Near Threatened
Black-vented Shearwater
About These Birds
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.
Black-vented Shearwater
30–38 cm. Dark above with blackish undertail and vent; white below. Breeds islands off Baja California; ranges offshore in eastern Pacific to Peru. Near Threatened; affected by introduced predators on breeding islands. Feeds on fish; often seen from Baja California shore.