Family: Procellariidae (Petrels, Shearwaters)

Authority: Gmelin, 1789

Red List Category

Criteria: A2de+3de+4de

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Justification of Red List category
Although there are no current data on the population trend, this species is susceptible to introduced mammalian predators, having been previously extirpated from Macquarie Island by cats and rats, and it has been commonly caught in longline fisheries in New Zealand waters. Evidence from Gough and Marion Islands suggest that the species is experiencing considerable predation from introduced mice, which are a major predator on other winter-breeding seabirds. The population on the Kerguelen Islands may also be in decline due to fishery bycatch. Based on these data, a moderately rapid decline is suspected and, as such, the species is listed as Near Threatened. Further data are urgently required in order to more accurately assess its population numbers and trends.

Population size: 151500 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 146,000,000 km²

Country endemic: no

Attributes
Land-mass type - oceanic island
Realm - Afrotropical
Realm - Neotropical
Realm - Oceanian
Realm - Antarctic
IUCN System - Terrestrial
IUCN System - Marine