Black-winged Petrel vs Balearic Shearwater
Pterodroma nigripennis compared with Puffinus mauretanicus
Side-by-Side Comparison
| Attribute | Black-winged Petrel | Balearic Shearwater |
|---|---|---|
| Scientific Name | Pterodroma nigripennis | Puffinus mauretanicus |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Critically Endangered |
| Length | — | — |
| Wingspan | 44.3 cm (17.4 in) | 48.4 cm (19.1 in) |
| Weight | 179.5 g (6.33 oz) | 514.8 g (18.16 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Black-winged Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Black-winged Petrel
30 cm. Small gadfly petrel; pale grey above with dark M-mark; white below with dark carpal patch and partial collar. Breeds Lord Howe, Kermadec, and central Pacific islands. Migrates to North Pacific; feeds on small squid and fish.
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.