Sulphur-crested cockatoo: What does the future entail for New Zealand?
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Authors
Smith, Toby
Hart, A.
Aguilar, Glenn
Fraser, Diane
Hart, A.
Aguilar, Glenn
Fraser, Diane
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Date
2025-11-06
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Conference Contribution - Poster Presentation
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New Zealand
sulphur-crested cockatoo (Cacatua galerita galerita)
invasive species
indigenous species
sulphur-crested cockatoo (Cacatua galerita galerita)
invasive species
indigenous species
ANZSRC Field of Research Code (2020)
Citation
Smith, T., Hart, A., Aguilar, G., & Fraser, D. (2025, November,6). Sulphur-crested cockatoo: What does the future entail for New Zealand? [Poster presentation]. School of Environmental and Animal Sciences Research Symposium 2025, Auckland, New Zealand
https://hdl.handle.net/10652/7045
Abstract
The successful human-influenced establishment of a new species to an area has been shown to alter the functioning of ecosystems, the results of which can cause declines and extinctions of indigenous populations. The greater sulphur-crested cockatoo (Cacatua galerita galerita; hereafter SCC), a large cavity-nesting psittacine native to Eastern Australia, were first introduced to New Zealand by the pet trade in the early 20th Century. Since then, SCC have successfully established several distant populations, notably in West Auckland, Whanganui, the Kapiti Coast and Christchurch. SCC have been observed damaging arable and tree nut crops. Furthermore, SCC have been shown to cause defoliation of native conifers, particularly to rimu (Dacrydium cupressinum), although not to an extent that is ecologically significant at present. This project aims to map the areas of suitable habitat for SCC in New Zealand. This will be done by modelling their current distribution in New Zealand against several environmental factors and human population with the species-distribution-modelling software MaxEnt. The findings from this study will contribute knowledge regarding the risk of SCC to New Zealand and support organisations such as Auckland Council to manage the species in the future.
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