Mascarene Petrel vs Balearic Shearwater
Pseudobulweria aterrima compared with Puffinus mauretanicus
Side-by-Side Comparison
| Attribute | Mascarene Petrel | Balearic Shearwater |
|---|---|---|
| Scientific Name | Pseudobulweria aterrima | Puffinus mauretanicus |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Critically Endangered | Critically Endangered |
| Length | — | — |
| Wingspan | 50.6 cm (19.9 in) | 48.4 cm (19.1 in) |
| Weight | 220.66666666666666 g (7.78 oz) | 514.8 g (18.16 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Critically Endangered
Mascarene Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Mascarene Petrel
35–36 cm. All-black petrel with hooked bill. Critically Endangered; breeds only Réunion Island; fewer than 250 adults estimated. One of the rarest seabirds. Threatened by introduced predators and light attraction; known mainly from bones and very occasional sightings at sea.
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.