Feasibility Plan to Eradicate Common Mynas (Acridotheres tristis) from Mangaia Island, Cook Islands

Abstract

Common mynas have been introduced (often as biocontrol for insects) or colonised many islands in the Pacific. They are one cause of decline in some native bird species such as endemic kingfishers, and are a pest when they damage fruit and compete for food to put out for domestic animals. The Taporoporoanga Ipukarea Society (TIS) of the Cook Islands proposes to eradicate mynas from Mangaia Island to protect kingfishers and commissioned this study to determine whether this is feasible and what would need to be done to reduce the risks of failure or overcome constraints during such an attempt. The Pacific Invasives Initiative supported this study partly because of the potential biodiversity and societal benefits to Mangaia, but partly to act as a demonstration for the management of mynas on other islands.