Slender-billed Prion vs Antarctic Prion
Pachyptila belcheri compared with Pachyptila desolata
Side-by-Side Comparison
| Attribute | Slender-billed Prion | Antarctic Prion |
|---|---|---|
| Scientific Name | Pachyptila belcheri | Pachyptila desolata |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 35.2 cm (13.9 in) | 36.5 cm (14.4 in) |
| Weight | 152.0 g (5.36 oz) | 149.0 g (5.26 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Slender-billed Prion
Least Concern
Antarctic Prion
About These Birds
Slender-billed Prion
25–26 cm. Slenderest-billed prion; pale blue-grey with faint M-mark and narrow dark breast-side patches. Breeds Falkland Islands, Kerguelen, Crozet. Feeds mainly on copepods by surface-seizing rather than filter-feeding. Slightly longer wings give more buoyant flight.
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.