Small Saint Helena Petrel vs Heinroth's Shearwater
Bulweria bifax compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Small Saint Helena Petrel | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Bulweria bifax | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Extinct | Vulnerable |
| Length | — | — |
| Wingspan | — | 35.7 cm (14.1 in) |
| Weight | 167.17 g (5.90 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Conservation Status
Extinct
Small Saint Helena Petrel
Vulnerable
Heinroth's Shearwater
About These Birds
Small Saint Helena Petrel
Extinct; known only from subfossil bones from St. Helena Island. Smaller than Bulwer's Petrel; went extinct shortly after human settlement of St. Helena, likely from introduced predators. Part of the endemic St. Helena seabird community that was largely extirpated by human arrival.
Heinroth's Shearwater
27 cm. Small dark shearwater; all sooty-brown with pale bill. Breeds Solomon Islands and Papua New Guinea. Critically Endangered; extremely poorly known with only a handful of records. Breeding biology almost completely unknown; one of the rarest and least-studied seabirds.