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Breeding success of isolated pairs of Caspian Terns in Canterbury

  • Publication Type

    Journal

  • Publication Year

    1984

  • Author(s)

    Pierce, R.J.

  • Journal Name

    Notornis

  • Volume, Issue

    31, 3

  • Pagination

    185-190

  • Article Type

    Paper

Keywords

breeding success; Caspian tern; Canterbury


Breeding success of isolated pairs of Caspian Terns in Canterbury

Notornis, 31 (3), 185-190

Pierce, R.J. (1984)

Article Type: Paper

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In Canterbury, Caspian terns (Hydroprogne caspia) nest mainly as single pairs associated with colonies of Black-backed gulls (Larus dominicanus) on shingle riverbeds. Of 37 nests studied, 28 (75%) hatched and 20 (54%) produced a total of 21 flying young, each pair raising an average of 0.6 young per season. The low productivity is attributed to reduced prey availability.