Herald Petrel vs Antarctic Petrel
Pterodroma heraldica compared with Thalassoica antarctica
Side-by-Side Comparison
| Attribute | Herald Petrel | Antarctic Petrel |
|---|---|---|
| Scientific Name | Pterodroma heraldica | Thalassoica antarctica |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 56.2 cm (22.1 in) | 59.2 cm (23.3 in) |
| Weight | 278.5 g (9.82 oz) | 658.3333333333334 g (23.22 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Herald Petrel
Least Concern
Antarctic Petrel
About These Birds
Herald Petrel
37 cm. Polymorphic petrel; pale morph has white underparts with dark M-mark and partial collar; dark morph sooty brown. Breeds widely across central and south Pacific islands. Ranges in tropical Pacific; feeds on squid and fish. Closely related to Kermadec Petrel.
Antarctic Petrel
40–46 cm, wingspan 100–110 cm. Striking chocolate-brown and white pattern; only member of its genus. Breeds solely in Antarctica on cliff ledges; among the most southerly-nesting birds. Feeds on fish and krill beneath pack ice. Returns to colonies in October; one of the most abundant Antarctic seabirds.