Black-vented Shearwater vs Antarctic Petrel
Puffinus opisthomelas مقارنةً بـ Thalassoica antarctica
Side-by-Side Comparison
| السمة | Black-vented Shearwater | Antarctic Petrel |
|---|---|---|
| الاسم العلمي | Puffinus opisthomelas | Thalassoica antarctica |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Near Threatened | Least Concern |
| الطول | — | — |
| طول الجناح | 46,6 cm (18.3 in) | 59,2 cm (23.3 in) |
| الوزن | 420,5833333333333 g (14.84 oz) | 658,3333333333334 g (23.22 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Near Threatened
Black-vented Shearwater
Least Concern
Antarctic Petrel
About These Birds
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.
Antarctic Petrel
40–46 cm, wingspan 100–110 cm. Striking chocolate-brown and white pattern; only member of its genus. Breeds solely in Antarctica on cliff ledges; among the most southerly-nesting birds. Feeds on fish and krill beneath pack ice. Returns to colonies in October; one of the most abundant Antarctic seabirds.