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Population density changes of adult North Island weka ( Gallirallus australis greyi ) in the Mansion House Historic Reserve, Kawau Island, in 1992-1999

  • Publication Type

    Journal Article

  • Publication Year

    2000

  • Author(s)

    A.J. Beauchamp; R. Chambers

  • Journal Name

    Notornis

  • Volume, Issue

    47, 2

  • Pagination

    82-89

  • Article Type

    paper

Keywords

census; Gallirallus australis; population density; Rallidae; Weka


Population density changes of adult North Island weka ( Gallirallus australis greyi ) in the Mansion House Historic Reserve, Kawau Island, in 1992-1999

Notornis, 47 (2), 82-89

A.J. Beauchamp; R. Chambers (2000)

Article Type: paper

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The total population of North Island weka (Gallirallus australis greyi) is about 4150 adults spread over five islands, one North Island population, and a number of captive birds in aviaries and mainland island programmes. Between 77% and 84% of the adult weka population are on Kawau Island. Density changes in the Mansion House Historic Reserve, and anecdotal records suggest that adult weka populations on Kawau Island has fluctuated between c.2100 and c.5000 during 1992-1999. The largest declines occurred within 12 months of the 1990-91 and 1997-98 droughts.