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    Factors affecting breeding success of the Flea Bay white-flippered penguin (Eudyptula minor albosignata) colony

    Allen, Warwick; Helps, F.; Molles, Laura
    Abstract
    The little blue penguin (Eudyptula minor) is in decline throughout much of its range in New Zealand and Australia, largely due to introduced predators, human disturbance and roadkill mortalities. The whiteflippered penguin is a unique morphological variant of the blue penguin, which is traditionally given subspecific status (Eudyptula minor albosignata), and is found only on Banks Peninsula and Motunau Island in Canterbury, New Zealand. We monitored a varying number of nest boxes from 1996 to 2009. Overall breeding success was 64% over 13 years of monitoring, with a hatching success rate of 75% and a fledging success rate of 85%. We used a set of generalised linear mixed models and model selection to examine the relative influence of various explanatory variables on hatching, fledging and overall breeding success. Breeding success in nest boxes significantly increased with shorter average pair bond length, longer guard period and later relative lay date. Guard period length was the best predictor of breeding success, followed by relative lay date and average pair bond length. Hatching success also increased with later relative lay date but fledging success was not influenced by any of the explanatory variables measured.... [Show full abstract]
    Keywords
    Banks Peninsula; blue penguin; Eudyptula minor; guard period; lay date; average pair bond length; Ecology
    Fields of Research
    0602 Ecology
    Date
    2011
    Type
    Journal Article
    Collections
    • Department of Pest Management and Conservation [646]
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    NZJEcol35_3_penguin.pdf
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    Copyright © New Zealand Ecological Society
    Citation
    Allen, W. J., Helps, F. W., & Molles, L. E. (2011). Factors affecting breeding success of the Flea Bay white-flippered penguin (Eudyptula minor albosignata) colony. New Zealand Journal of Ecology, 35(3), 199-208.
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