The team at BirdLife Bunbury are encouraging all community members to help conserve the region's native wildlife.
BirdLife groups across Western Australia are now busily preparing for the 2020 Great Cocky Count.
Over the past decade, the annual citizen science survey has helped BirdLife WA to assess black cockatoo numbers in the South-West.
This year, volunteers will be monitoring the region's Carnaby's Black Cockatoo, Forest Red-tailed Black Cockatoo, and Baudin's Black Cockatoo populations.
According to BirdLife Bunbury, their numbers are steadily declining due to human impacts.
The group is seeking the public's help to identify and monitor more night roost sites in the region.
Those who locate night roost sites are being urged to report each site's exact location to BirdLife WA.
BirdLife Bunbury convenor Sue Kalab said more needed to be done to protect the region's black cockatoos.
"Right now, we're looking for more volunteers and more night roost sites," she said.
"The Great Cocky Count helps us to monitor bird numbers and collect important data."
Registrations for this year's Great Cocky Count will remain open until March 15, with the event scheduled to take place at sunset (approximately 5.30pm to 6.30pm) on April 5.
The South West Catchments Council will hold a black cockatoo education workshop at the Parade Hotel on March 11, from 6pm to 8pm.
Visit the BirdLife Australia website or contact BirdLife WA on 9383 7749 for more details about the initiative.