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Hybridisation by South Island pied oystercatcher (Haematopus finschi) and variable oystercatcher (H. unicolor) in Canterbury

  • Publication Type

    Journal

  • Publication Year

    2010

  • Author(s)

    T. Crocker; S. Petch; P. Sagar

  • Journal Name

    Notornis

  • Volume, Issue

    57, 1

  • Pagination

    27-32

  • Article Type

    Paper

Keywords

conservation management; Haematopus finschi; Haematopus unicolor; hybridisation; South Island pied oystercatcher; variable oystercatcher


Hybridisation by South Island pied oystercatcher (Haematopus finschi) and variable oystercatcher (H. unicolor) in Canterbury

Notornis, 57 (1), 27-32

T. Crocker; S. Petch; P. Sagar (2010)

Article Type: Paper

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We document hybridisation between South I pied oystercatcher (Haematopus finschi) and variable oystercatcher (H. unicolor) in Canterbury from 1989 to 2005. From 2 observations of hybridisation between South I pied oystercatcher x variable oystercatcher when first discovered, the hybrid swarm has increased to around 17 pairs, including South I pied oystercatcher pairs, variable oystercatcher pairs, hybrid pairs, and mixed pairs. We present data on the birds and their offspring and speculate on possible causes and implications of hybridisation for conservation of the taxa.