Pycroft's Petrel vs Heinroth's Shearwater
Pterodroma pycrofti compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Pycroft's Petrel | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Pterodroma pycrofti | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Vulnerable | Vulnerable |
| Length | — | — |
| Wingspan | 42.8 cm (16.9 in) | 35.7 cm (14.1 in) |
| Weight | 156.5 g (5.52 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Pycroft's Petrel
Vulnerable
Heinroth's Shearwater
About These Birds
Pycroft's Petrel
26–28 cm. Small; pale grey above with dark M-mark; white underparts with partial dark collar. Breeds small islands off northern New Zealand (Poor Knights, Hen & Chickens). Vulnerable; migrates to North Pacific. Feeds on squid and fish; nocturnal at colonies; threatened by rats.
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.