An extinct nestorid parrot (Aves, Psittaciformes, Nestoridae) from the Chatham Islands, New Zealand

Jamie Wood, Kieren Mitchell, Richard Scofield, Alan Tennyson, Andrew Fidler, Janet Wilmshurst, Bastien Llamas, Alan Cooper

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    We describe an extinct parrot from late Quaternary fossil bone deposits on the Chatham Islands, located c.800km east of mainland New Zealand. Mitochondrial DNA analyses and osteological characters confirm that the Chatham Islands parrot was a sister taxon to the New Zealand kaka (Nestor meridionalisGmelin, 1788). The relatively large femur:humerus length ratio and broad pelvis of the Chatham Islands parrot indicate that it had a more terrestrial habit than the kaka. Stable dietary isotope analyses (δ 15N and δ 13C) of Chatham Islands parrot bones suggest that the species may have been mainly herbivorous, although further analyses are required to confirm this. The presence of Chatham Islands parrot bones in early midden deposits shows that the species persisted into the post-settlement era, and became extinct possibly as a result of habitat loss, hunting pressure, and rat predation following initial Polynesian settlement of the islands (sometime between the 13th and 16th centuries AD).

    Original languageEnglish
    Pages (from-to)185-199
    Number of pages15
    JournalZoological Journal of the Linnean Society
    Volume172
    Issue number1
    DOIs
    Publication statusPublished - Sep 2014

    Keywords

    • Ancient DNA
    • Avian palaeontology
    • Isotopes
    • Kaka
    • Kea
    • Morphometrics
    • Phylogenetics

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