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Decline of brown teal (Anas chlorotis) in Northland, New Zealand, 1988-99

  • Publication Type

    Journal Article

  • Publication Year

    2001

  • Author(s)

    R. Parrish; M. Williams

  • Journal Name

    Notornis

  • Volume, Issue

    48, 3

  • Pagination

    131-136

  • Article Type

    Paper

  • DOI

    https://doi.org/10.63172/463547pveket

Keywords

Anas chlorotis; brown teal; Northland: New Zealand; population; status


Decline of brown teal (Anas chlorotis) in Northland, New Zealand, 1988-99

Notornis, 48 (3), 131-136

R. Parrish; M. Williams (2001)

Article Type: Paper

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Numbers of brown teal (Anas chlorotis) present at summer flock sites in Northland, New Zealand declined 65% during 1988-99 and the species’ principal range contracted to three enclaves located along 20 km of the eastern coast. Most populations underwent a period of gradual decline followed by an abrupt crash, symptomatic of prolonged recruitment failure. Drought-induced habitat and landscape change is proposed as an important agent of decline in two formerly large populations at Clendon Cove and Tutaematai. Extirpation in Northland appears imminent.