Streaked Shearwater vs Antarctic Prion
Calonectris leucomelas compared with Pachyptila desolata
Side-by-Side Comparison
| Attribute | Streaked Shearwater | Antarctic Prion |
|---|---|---|
| Scientific Name | Calonectris leucomelas | Pachyptila desolata |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 63.8 cm (25.1 in) | 36.5 cm (14.4 in) |
| Weight | 530.5 g (18.71 oz) | 149.0 g (5.26 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Streaked Shearwater
Least Concern
Antarctic Prion
About These Birds
Streaked Shearwater
48 cm, wingspan 122 cm. Large shearwater; brown-streaked white head and neck; brown above, white below. Breeds Japan and islands of East Asia; migrates south to Australia and Indian Ocean. Feeds on fish and squid; forms large flocks; the most abundant shearwater in NW Pacific.
Antarctic Prion
25–28 cm, wingspan 58–66 cm. Classic prion pattern: pale blue-grey, white below, bold dark M across upperwing. Medium-broad bill. Most abundant and widespread prion; breeds South Georgia, Heard, Kerguelen, Macquarie. Feeds on crustaceans; makes deep dives compared to congeners.