Garrodia nereis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Garrodia nereis
Species Authority: (Gould, 1841)
Common Name(s):
English Grey-backed Storm-petrel, Grey-backed Storm Petrel, Gray-backed Storm-Petrel, Grey-backed Storm-Petrel
Oceanites nereis nereis Turbott (1990)

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S., Calvert, R.
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Geographic Range [top]

Range Description: The Grey-backed Storm-petrel has a circumpolar distribution in the subantarctic, breeding on islands from the Falkland Islands (Islas Malvinas) in the south-west Atlantic east to the Chatham Islands (New Zealand). Individuals can winter nearer to the continents, being found off the extreme southern coast of Argentina, and south-east Australia and Tasmania (del Hoyo et al. 1992).

Argentina; Australia; Chile; Falkland Islands (Malvinas); French Southern Territories; New Zealand; South Georgia and the South Sandwich Islands
Present - origin uncertain:
Heard Island and McDonald Islands; Saint Helena, Ascension and Tristan da Cunha; South Africa
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Brooke (2004) estimated the global population to potentially number over 200,000 individuals.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This marine species occurs in the cool waters of the subantarctic zone. It is generally found over the edge of the continental shelf and is apparently only eplagic during dispersal. Its diet comprises mainly of immature barnacles and other crustaceans, but also small squid and occasionally small fish. It catches prey mostly by pattering over the surface whilst in flight, but also by dipping and shallow plunging. It has been seen to attend trawlers and occasionally follows ships. Its breeding season starts in October or November, with individuals forming loose colonies on oceanic islands, creating burrows in vegetation or nesting in crevices in rocks (del Hoyo et al. 1992).

Systems: Terrestrial; Marine

Citation: BirdLife International 2012. Garrodia nereis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 04 September 2015.
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