Masatierra Petrel vs Heinroth's Shearwater
Pterodroma defilippiana compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Masatierra Petrel | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Pterodroma defilippiana | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Vulnerable | Vulnerable |
| Length | — | — |
| Wingspan | 45.2 cm (17.8 in) | 35.7 cm (14.1 in) |
| Weight | 173.83333333333334 g (6.13 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Conservation Status
Vulnerable
Masatierra Petrel
Vulnerable
Heinroth's Shearwater
About These Birds
Masatierra Petrel
26–28 cm. Small; pale grey above with dark M-mark; white underparts with partial dark collar. Breeds Juan Fernandez and Desventuradas islands off Chile. Vulnerable; small range. Ranges in subtropical southeast Pacific; closely related to Cook's and Pycroft's petrels.
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.