Black Cockatoo – 2017 Great Cocky Count

Black Cockatoo Community Survey Count – 2017

Black Cockatoo Count 2017

Background

  • Black Cockatoo Survey – The Great Cocky Count (GCC) is an annual citizen science survey for three threatened black-cockatoos in the southwest of Western Australia (WA). Volunteers are allocated to a known or potential roost site and use a standard protocol to record the numbers of black-cockatoos arriving at the site to roost for the night.
  • The 2017 GCC occurred on Sunday 9 April 2017. This year’s GCC was the eighth consecutive count and ninth overall.
  • The 2017 GCC surveyed roost sites for Carnaby’s, Baudin’s and Forest Red-tailed Black-Cockatoo (FRTBC). All are endemic to south western WA and listed as threatened species under State and Commonwealth legislation.
  • This report builds on the substantial contribution made by previous Great Cocky Counts to our knowledge of black-cockatoos in the greater Perth Region and regional Western Australia.

Key Outcomes

  • The Great Cocky Count is one of the largest citizen science surveys of its kind in Australia. Community interest is significant – this year almost 900 registered volunteers surveyed 469 sites across the southwest of WA. Total volunteer participation likely exceeded 1,500 community members.
  • The minimum population count for Carnaby’s Black-Cockatoo in the Greater Perth-Peel Region was 10,248 (similar to 2016 and around twice the average for 2010-15). The Greater Perth-Peel Region consists of the Perth-Peel Coastal Plain, which encompasses all of the Perth-Peel metropolitan area along the Swan Coastal Plain, and the Northern Darling Scarp and Plateau, which includes the northern Jarrah-Marri Forest (Table 3).
  • Most (73%) of the Carnaby’s Black-Cockatoos recorded in the Perth-Peel Coastal Plain were associated with the Gnangara-Pinjar pine plantation, north of Perth. The large number of Carnaby’s Black-Cockatoos (7,450) recorded in roosts associated with the pine plantation is higher than previous surveys. In previous years, the pine plantation has supported 27- 62% of the Carnaby’s Black-Cockatoos recorded in the Perth-Peel Coastal Plain during the non-breeding season, emphasising the importance of pines as both a roosting area and food resource during this period.
  • A single roost site located east of Yanchep had a count of 3,528 Carnaby’s Black-Cockatoos. This accounted for 34% of all of the Carnaby’s recorded on the Perth-Peel Coastal Plain, and is the second highest single count ever recorded in a Great Cocky Count survey. The same site had a count of 4,897 in 2016 and has come to be known as the ‘mega roost’.

To read the full report of the Black Cockatoo Count visit Direct.Birdline.org

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