Management of Introduced Corellas

 

Management of Introduced Corellas

The Little Corella (Cacatua sanguinea sanguinea) is an introduced bird species to the southwest of Western Australia and is listed as a category 3 declared pest under the Western Australian Biosecurity and Agriculture Management Act 2007 (BAM Act). This invasive species is known to be destructive, noisy, and out compete local native species for food and roosting habitat e.g., Western Ringtail Possum and Black Cockatoos.

Little Corellas are highly intelligent birds that have a long term memory and use regular flight paths to return to areas with reliable sources of food and water. Unfortunately, these are areas such as the City of Bunbury (the City). The damage caused by Little Corellas is seasonal and occurs from late October through to April depending on the season. It is not uncommon to find flocks of between 200-500 birds within the City during this time, creating challenges for the City council to manage. The Little Corella is very adaptable bird and quickly becomes used to various management​ 

Management

The City’s Little Corella management program has been active since 2010 and aims to reduce the Little Corella numbers each season. In 2018, the City prepared an Introduced Corella Management Strategy to guide and unify management efforts within the Greater Bunbury Region. As the City remains focused on management efforts to minimise the adverse impacts caused by Little Corellas, the City has revised the 2018 strategy to form the 2021/2022 Little Corella Management Plan. The updated Little Corella Management Plan is a combination of techniques identified in the 2018 strategy and new techniques that have not yet been trialled within the City.

The combination of techniques outlined in the 2021/2022 Little Corella Management Plan are: 

•Trapping events at the City control site.

•Shooting when trapping is not possible at the control site.

• Increased deterrence efforts within urban areas using Department of Biodiversity Conservation and Attractions (DBCA) approved dispersal techniques.

     o Implementation of scare kites within Queens Gardens and the CBD.

     o Firing of blanks within licenced areas

• Flight path and movement tracking to outline roosting locations and identify opportunities to collaborate with neighbouring LGAs. 

• Provide community advice/education on deterrence and dispersal mechanisms that can be undertaken in private property. 

• Investigate possibility of a second control site with the Greater Bunbury Region. 

A final report written by the current vertebrate pest control specialist contractors will outline any recommendations for the ongoing management of the Little Corella. The recommendations will be implemented in future corella management plans and control works. 


What you can do on your property: 

• Netting fruit trees or large trees that are ideal for roosting.

• Leaving minimal open water sources outside.

• Removing bird feeders within your property and refraining from handfeeding all birds. 

• Hanging scare kites in the shape of birds of prey

• Making noise to move the Little Corellas on (e.g., blowing of a whistle, clang of metal, and shooing noises etc.).

Information, enquiries or complaints related to this issue can be lodged via email to records@bunbury.wa.gov.au ​​