Juan Fernandez Petrel vs Antarctic Petrel
Pterodroma externa compared with Thalassoica antarctica
Side-by-Side Comparison
| Attribute | Juan Fernandez Petrel | Antarctic Petrel |
|---|---|---|
| Scientific Name | Pterodroma externa | Thalassoica antarctica |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Vulnerable | Least Concern |
| Length | — | — |
| Wingspan | 58.3 cm (23.0 in) | 59.2 cm (23.3 in) |
| Weight | 432.5 g (15.26 oz) | 658.3333333333334 g (23.22 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Juan Fernandez Petrel
Least Concern
Antarctic Petrel
About These Birds
Juan Fernandez Petrel
43 cm, wingspan 97 cm. Large; dark grey-brown above with white nape and underparts; dark carpal bar and partial collar. Breeds Juan Fernandez Islands (Chile); ranges across subtropical Pacific. Vulnerable due to small breeding range; feeds on fish and squid.
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.