Antarctic Prion vs Large Saint Helena Petrel
Pachyptila desolata compared with Pterodroma rupinarum
Side-by-Side Comparison
| Attribute | Antarctic Prion | Large Saint Helena Petrel |
|---|---|---|
| Scientific Name | Pachyptila desolata | Pterodroma rupinarum |
| Order | Procellariiformes | Procellariiformes |
| Family | Procellariidae | Procellariidae |
| Conservation Status | Least Concern | Extinct |
| Length | — | — |
| Wingspan | 36.5 cm (14.4 in) | — |
| Weight | 149.0 g (5.26 oz) | — |
| Diet | -- | -- |
| Clutch Size | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Antarctic Prion
Extinct
Large Saint Helena Petrel
About These Birds
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.
Large Saint Helena Petrel
Extinct; known only from subfossil bones found on St. Helena. Medium-large petrel that went extinct within the last few centuries, likely due to human settlement, habitat destruction, and introduced predators. Related to living Pterodroma species; part of the endemic St. Helena avifauna.