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Macronectes halli
– Near Threatened
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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AVES
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Order:
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PROCELLARIIFORMES
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Family:
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PROCELLARIIDAE
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Scientific Name:
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Macronectes halli
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Species Authority:
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Mathews, 1912
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Common Name/s:
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| English | — | NORTHERN GIANT-PETREL |
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Assessment Information
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Red List Category & Criteria:
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NT ver 3.1 (2001)
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Year Assessed:
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2004
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Assessor/s:
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BirdLife International
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Evaluator/s:
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Stattersfield, A., Benstead, P. & Butchart, S. (BirdLife International Red List Authority)
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Justification:
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Nearly qualifies for listing as threatened under criteria A3cd.
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History:
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| 1988 | - | Lower Risk/least concern (BirdLife International 2004) |
| 1994 | - | Lower Risk/near threatened (Collar, Crosby and Stattersfield 1994) |
| 2000 | - | Lower Risk/near threatened (BirdLife International 2000) |
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Geographic Range
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Range Description:
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Macronectes halli breeds at South Georgia (to UK), Prince Edward Islands (South Africa), Crozet and Kerguelen islands (French Southern Territories), Macquarie Island (Australia), Auckland, Campbell, Antipodes and Chatham islands and, historically, on islets off Stewart Island (New Zealand). The world population in the 1980s was estimated at c.8,600 pairs4; a more recent estimate (late 1990s) is 11,500 pairs, an apparent increase of 34%5 though this may be the result of better monitoring. There has been a c.30% increase in the large South Georgia population, similar increases at Marion, possible increases at Prince Edward and stable populations at Macquarie7. The Possession Island (Crozet) population, which decreased between the 1980s and 1992, is now increasing1,6. These increases probably reflect greater availability of carrion from expanding populations of fur seals Arctocephalus gazella and A. tropicalis and increased waste from commercial fishing operations5. Its less colonial breeding habit makes it less sensitive to human disturbance than the threatened Southern Giant-petrel M. giganteus. It is more restricted to shorelines than the more pelagic Southern Giant-petrel, but like that species, male and females exhibit clearly defined spatial segragation in their foraging ranges8,9. Nevertheless, it is at risk from mortality through longline fishing for Patagonian toothfish Dissostichus eleginoides: 2,000-4,000 giant-petrels were estimated killed by illegal or unregulated fishing in the Indian Ocean sector of the Southern Ocean in 1997-19982,3. This threat, in combination with habitat loss due to fur seal expansion, could lead to decreases in the near future. CMS Appendix II and ACAP Annex 1.
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Countries:
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Native:
Argentina; Australia; Brazil; Chile; Falkland Islands (Malvinas); French Southern Territories; New Zealand; South Africa; South Georgia and the South Sandwich Islands; Uruguay
Vagrant:
Réunion
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Habitat and Ecology
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System:
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Terrestrial; Marine
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