Northern Giant Petrel vs Heinroth's Shearwater
Macronectes halli compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Northern Giant Petrel | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Macronectes halli | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 99.6 cm (39.2 in) | 35.7 cm (14.1 in) |
| Weight | 4362.5 g (153.88 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Conservation Status
Least Concern
Northern Giant Petrel
Vulnerable
Heinroth's Shearwater
About These Birds
Northern Giant Petrel
80–95 cm, wingspan 150–200 cm. Resembles Southern Giant Petrel but bill tip is reddish-brown; lacks white morph. Breeds subantarctic islands (South Georgia, Macquarie, Auckland). Ranges north into subtropics; scavenges offal and carrion at sea. Near Threatened due to longline bycatch.
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.