Bonin Petrel vs Balearic Shearwater
Pterodroma hypoleuca so với Puffinus mauretanicus
Side-by-Side Comparison
| Thuộc Tính | Bonin Petrel | Balearic Shearwater |
|---|---|---|
| Tên Khoa Học | Pterodroma hypoleuca | Puffinus mauretanicus |
| Bộ | Procellariiformes | Procellariiformes |
| Họ | Procellariidae | Procellariidae |
| Tình Trạng Bảo Tồn | Least Concern | Critically Endangered |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 45,6 cm (18.0 in) | 48,4 cm (19.1 in) |
| Khối Lượng | 229,0 g (8.08 oz) | 514,8 g (18.16 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Least Concern
Bonin Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Bonin Petrel
30 cm. Pale grey above with dark M-mark; white below with dark partial collar. Breeds Northwest Hawaiian Islands and Bonin (Ogasawara) Islands. Migrates to south Pacific after breeding. Feeds on squid and fish; population recovering after rat eradication on breeding islands.
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.