Chatham Islands Petrel vs Heinroth's Shearwater
Pterodroma axillaris compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Chatham Islands Petrel | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Pterodroma axillaris | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Vulnerable | Vulnerable |
| Length | — | — |
| Wingspan | 42.4 cm (16.7 in) | 35.7 cm (14.1 in) |
| Weight | 226.25 g (7.98 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Chatham Islands Petrel
Vulnerable
Heinroth's Shearwater
About These Birds
Chatham Islands Petrel
30 cm. Small; dark grey above with white forehead and underparts; distinctive black axillaries. Critically Endangered; breeds only South East Island, Chatham Islands (few hundred pairs). Threatened by weka predation; intensive management sustains population. Ranges in temperate Pacific.
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.