Bulwer's Petrel vs Antarctic Petrel
Bulweria bulwerii compared with Thalassoica antarctica
Side-by-Side Comparison
| Attribute | Bulwer's Petrel | Antarctic Petrel |
|---|---|---|
| Scientific Name | Bulweria bulwerii | Thalassoica antarctica |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 40.6 cm (16.0 in) | 59.2 cm (23.3 in) |
| Weight | 103.16666666666667 g (3.64 oz) | 658.3333333333334 g (23.22 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Bulwer's Petrel
Least Concern
Antarctic Petrel
About These Birds
Bulwer's Petrel
26–28 cm, wingspan 68–73 cm. All-dark chocolate-brown with long wedge-shaped tail; pale diagonal wing-bar. Breeds subtropical Atlantic and Pacific islands; migrates to tropical oceans. Buoyant, weaving flight close to water. Feeds on squid and fish at night.
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.