Hawaiian Petrel vs Balearic Shearwater
Pterodroma sandwichensis compared with Puffinus mauretanicus
Side-by-Side Comparison
| Attribute | Hawaiian Petrel | Balearic Shearwater |
|---|---|---|
| Scientific Name | Pterodroma sandwichensis | Puffinus mauretanicus |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Endangered | Critically Endangered |
| Length | — | — |
| Wingspan | 54.3 cm (21.4 in) | 48.4 cm (19.1 in) |
| Weight | 479.5 g (16.91 oz) | 514.8 g (18.16 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Endangered
Hawaiian Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Hawaiian Petrel
43 cm. Dark above with white forehead; white below with dark partial collar and carpal bar. Breeds high-elevation burrowing colonies on Hawaiian mountains. Vulnerable; threatened by introduced predators, light attraction, habitat loss. Migrates to northeast Pacific after breeding.
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.