Tropical Shearwater vs Antarctic Petrel
Puffinus bailloni compared with Thalassoica antarctica
Side-by-Side Comparison
| Attribute | Tropical Shearwater | Antarctic Petrel |
|---|---|---|
| Scientific Name | Puffinus bailloni | Thalassoica antarctica |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 37.0 cm (14.6 in) | 59.2 cm (23.3 in) |
| Weight | 212.0 g (7.48 oz) | 658.3333333333334 g (23.22 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Tropical Shearwater
Least Concern
Antarctic Petrel
About These Birds
Tropical Shearwater
27–31 cm. Small; dark brown above; white below. Breeds islands of Indian Ocean and west Pacific. Several subspecies sometimes treated as separate species. Feeds on fish and squid; nocturnal at breeding colonies. Part of the Audubon's Shearwater species complex.
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.