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(Redirected from Pachyptila salvini)
Alternative names: Medium-billed Prion; MacGillivray's Prion (macgillivrayi); Lesser Broad-billed Prion; Little Broad-billed Prion; Marion Island Prion; Whalebird
25-28cm, wingspan 57-58 cm.
Sexes similar. Juveniles have broader white tips to rear scapulars.
 Similar species
Very difficult to distinguish from Broad-billed Prion at sea. Has a slightly smaller and bluer bill, the forehead is not so steep and the partial pectoral band often less conspicuous. Also very similar to Antarctic Prion. The tail is a little shorter, the bill marginally larger and the pectoral band often less noticeable.
Found in the Indian Ocean. Breeds on Crozet Island, Prince Edward Island, Amsterdam Island and St. Paul island.
Two subspecies recognized:
A pelagic species, usually only seen offshore except near breeding colonies. Outside breeding season in areas of upwelling. Breeds inland on highland plateaus of islands, on grassy slopes with shrubs, also in caves or crevices.
A highly gregarious species.
Feeds on crustaceans, mainly amphipods and euphausiids. Takes also squid and fish. Forages by hydroplaning and by filtering and surface seizing.
Breeding season starts in October. Breeds in huge colonies of up to 1 million birds. A burrow is often occupied by more than one pair. Lays 1 egg.
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