Conservation status and reintroduction of the Cocos Buff-banded Rail, Gallirallus philippensis andrewsi

John Casimir Zichy-Woinarski, I MacRae, T Flores, Tanya Detto, J Reid, C Pink, Samantha Flakus, M Misso, N Hamilton, R Palmer, K Morris, L Znidersic, B Hill

    Research output: Contribution to journalArticle

    Abstract

    An endemic subspecies of Buff-banded Rail (Gallirallus philippensis) is restricted to the Cocos (Keeling) Islands, a group of 27 islands, with total area of ∼15km2, in the north-eastern Indian Ocean. Human settlement led to marked environmental degradation of the 26 islands in the southern atoll of the group. The Cocos Buff-banded Rail declined severely, with the last confirmed record from islands in the southern atoll in 1991. The subspecies has persisted, however, with a population of ∼800 individuals, on a single island, Pulu Keeling, 24km north of the southern atoll. A recovery plan for this endangered subspecies recommended reintroduction to a suitable island in the southern atoll. This paper provides a brief overview of the history and status of the subspecies, and describes an April 2013 reintroduction of 39 rails from Pulu Keeling to the 1-km2 Horsburgh Island in the southern atoll. This program has had at least short-term success, with monitoring showing successful recruitment in the reintroduced population, and its increase to ∼54 individuals by October 2014 and ∼121 individuals by June 2015. Much of the world's loss of biodiversity has been from, and continues to occur on, islands: this project demonstrates that well-considered mitigation of threats and translocation programs can provide solutions to this challenge.
    Original languageEnglish
    Pages (from-to)32-40
    Number of pages9
    JournalEmu
    Volume116
    Issue number1
    DOIs
    Publication statusPublished - 8 Sep 2016

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