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Chatham Island taiko Pterodroma magentae management and research, 1987-1993: predator control, productivity and breeding biology

  • Publication Type

    Journal Article

  • Publication Year

    1994

  • Author(s)

    M.J. Imber; G.A. Taylor; A.D. Grant; A. Munn

  • Journal Name

    Notornis

  • Volume, Issue

    41, supp

  • Pagination

    61-68

  • Article Type

    Paper

  • DOI

    https://doi.org/10.63172/593185becpvj

Keywords

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Chatham Island taiko Pterodroma magentae management and research, 1987-1993: predator control, productivity and breeding biology

Notornis, 41 (supp), 61-68

M.J. Imber; G.A. Taylor; A.D. Grant; A. Munn (1994)

Article Type: Paper

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Since the first burrows of Chatham Island taiko Pterodroma magentae were found in 1987/88, trapping around the burrows has killed 204 feral cats Felis cattus, 3053 possums Trichosurus vulpecula, 1572 weka Gallirallus australis and 589 rats Rattus spp. in 109,892 trap-nights to March 1993. No Taiko are known to have been killed by predators. Productivity was static at one fledgling per year until 1992/93, when two fledglings were reared. Unobtrusive studies of breeding biology indicated that mating occurred about 1 October, laying about 26 November, hatching about 20 January and fledglings departed about 4 May. The pre-laying exodus of females lasted up to 50 + days and chick-rearing took about 105 days.