Buller's Shearwater vs Antarctic Prion
Ardenna bulleri compared with Pachyptila desolata
Side-by-Side Comparison
| Attribute | Buller's Shearwater | Antarctic Prion |
|---|---|---|
| Scientific Name | Ardenna bulleri | Pachyptila desolata |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Vulnerable | Least Concern |
| Length | — | — |
| Wingspan | 55.2 cm (21.7 in) | 36.5 cm (14.4 in) |
| Weight | 388.5 g (13.70 oz) | 149.0 g (5.26 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Buller's Shearwater
Least Concern
Antarctic Prion
About These Birds
Buller's Shearwater
46–47 cm, wingspan 96–99 cm. Distinctive; dark above with grey-white M-mark on upperwing; white below with grey cap. Breeds only Snares and Poor Knights Islands, New Zealand. Migrates to North Pacific. Near Threatened; feeds on fish and squid; gregarious at sea.
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.