Sooty Shearwater vs Heinroth's Shearwater
Ardenna grisea compared with Puffinus heinrothi
Side-by-Side Comparison
| Attribute | Sooty Shearwater | Heinroth's Shearwater |
|---|---|---|
| Scientific Name | Ardenna grisea | Puffinus heinrothi |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Near Threatened | Vulnerable |
| Length | — | — |
| Wingspan | 59.1 cm (23.3 in) | 35.7 cm (14.1 in) |
| Weight | 814.0 g (28.71 oz) | 82.0 g (2.89 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Sooty Shearwater
Vulnerable
Heinroth's Shearwater
About These Birds
Sooty Shearwater
40–51 cm, wingspan 94–110 cm. All dark sooty-brown with silvery-white underwing flash. Breeds New Zealand and southern South America; undertakes one of the longest migrations of any animal to North Pacific and Atlantic. Feeds on fish, squid, and krill. Near Threatened; millions estimated.
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.