Family/Sub-family Hydrobatidae

Species name author Kuroda, 1922

Taxonomic source(s) Brooke (2004), Christidis and Boles (1994), Dowsett and Forbes-Watson (1993), Sibley and Monroe (1990, 1993)

Synonyms Hydrobates matsudairae Christidis and Boles (2008)

Identification

Population estimate

Population trend

Range estimate (breeding/resident)

Country endemic?

20,000

unset

22,600,000 km²

Yes

Range & population Oceanodroma matsudairae is only known to breed on the Iwo Islands, southern Japan. It may also breed on the Ogasawara Islands, but this requires confirmation. After the breeding season, it is thought to move south across the equator, perhaps to the Timor Sea off north-west Australia, and then west into the Indian Ocean, where it winters mostly in the equatorial belt around the Seychelles and west to Somalia and Kenya. Some birds may winter off north-east New Guinea. No quantitative data are available on its population, although it is reported to be locally common in its breeding range.

Important Bird Areas Click here to view map showing IBAs where species is recorded and triggers any of the IBA criteria.

Ecology: It is colonial, nesting in burrows on high ground on offshore islands¹. Breeding is thought to begin in January with most fledging taking place in June¹. In the non-breeding season it is generally pelagic, occurring far from the coast¹.

Threats Threats are unknown but, given the inaccessibility of its nesting colonies, human activities are unlikely to be a problem.

Conservation measures underway None is known.

Conservation measures proposed Census and monitor Iwo Islands colonies. Study its ecological requirements and threats. Search for further breeding colonies on Japanese offshore islands.

References BirdLife International (2001). 1. del Hoyo et al. (1992).

Further web sources of information

Fully detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001), together with new information collated since the publication of the Red Data Book

Text account compilers Phil Benstead (BirdLife International), Mike Crosby (BirdLife International), Nic Peet (BirdLife International), Andy Symes (BirdLife International)

IUCN Red List evaluators Phil Benstead (BirdLife International), Jeremy Bird (BirdLife International), Stuart Butchart (BirdLife International), Simba Chan (Wild Bird Society of Japan), Nigel Collar (BirdLife International), Mike Crosby (BirdLife International), Alison Stattersfield (BirdLife International)

Recommended citation BirdLife International (2009) Species factsheet: Oceanodroma matsudairae. Downloaded from http://www.birdlife.org on 9/2/2010

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

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