15195: Increasing the breeding capacity for threatened Carnaby’s Black-Cockatoo.

    Carnaby's Black-Cockatoo (Calyptorhynchus latirostris) is an endangered species endemic to southwestern Australia. The species has declined in range and abundance over the last 50 years as a result of the extensive removal and fragmentation of its breeding and foraging habitat.  The species breeds in large hollows in eucalypt trees. Such hollows only occur in trees at least 130 years old. Degradation and loss of remaining large trees is resulting in the decrease in the availability of suitable nest hollows for the cockatoos. Research has demonstrated that new hollows are not being created fast enough to offset the loss of existing hollows.  Without management the number of suitable hollows available to Carnaby's Black-Cockatoo will be a major factor severely limiting the number of birds able to breed. Recent research has established that hollows are already a limiting factor for Carnaby's Black-Cockatoo in some areas and that providing suitable artificial hollows results in the increase in the number of breeding attempts. 

    The provision of 60 artificial hollows in one breeding area in the northern wheatbelt resulted in a significant increase in the number of breeding attempts from 49 in the breeding season of 2010 before artificial hollows were installed, to 101 in 2014 after 60 artificial hollows had been installed.  Providing artificial hollows in selected areas where the birds are breeding will increase the availability of hollows and provide breeding opportunities for birds unable to breed because of lack of suitable hollows.

    Investment: $ 40 000
    In-kind contribution: $ 74 000
    Delivery organisation: BirdLife Australia (Western Australia)
    Project duration: April 2016 - February 2017
    Location: Shire of Broomehill-Tambellup, Shire of Gnowangerup, Shire of Lake Grace, Shire of Ravensthorpe
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