Balearic Shearwater vs Black-vented Shearwater
Puffinus mauretanicus so với Puffinus opisthomelas
Side-by-Side Comparison
| Thuộc Tính | Balearic Shearwater | Black-vented Shearwater |
|---|---|---|
| Tên Khoa Học | Puffinus mauretanicus | Puffinus opisthomelas |
| Bộ | Procellariiformes | Procellariiformes |
| Họ | Procellariidae | Procellariidae |
| Tình Trạng Bảo Tồn | Critically Endangered | Near Threatened |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 48,4 cm (19.1 in) | 46,6 cm (18.3 in) |
| Khối Lượng | 514,8 g (18.16 oz) | 420,5833333333333 g (14.84 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Critically Endangered
Balearic Shearwater
Near Threatened
Black-vented Shearwater
About These Birds
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.
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.