PHCC staff, volunteers and Birdlife Australia have been busy undertaking Exploration Surveys for White-tailed Black Cockatoos, including Carnaby (vulnerable) and Baudin’s (threatened) Black Cockatoos, across the Swan Coastal Plain and Hotham-Williams.

The population of White-tailed Black Cockatoos has significantly declined because of habitat degradation, removing nesting hollows and food resources and illegal shooting. While the distribution of breeding and roost sites for Black Cockatoos across the Swan Coastal Plain is relatively well surveyed and mapped, there have been few historical surveys for sites within the Hotham-Williams sub-catchment. We also know very little about the distribution and abundance of Baudin’s Black Cockatoos. In collaboration with Birdlife Australia, we embarked on exploration surveys to increase our understanding of White-tailed Black Cockatoos, and important sites for their breeding, roosting and foraging.

We traversed bushland areas around Wandering (Timber Reserve), Boddington, Dryandra Woodlands National Park, Dwellingup, Montague State Forests and Quindanning, and several sites across the Swan Coastal Plain, searching for signs of recent Black Cockatoo foraging and breeding. Thank you to our volunteers who provided more eyes on the ground, but particularly to the Wilman Elders (Jock and Nick Abraham) who joined our Dryandra surveys and provided important historical information about bush tucker and the significance of Dryandra for Wilman People.

Wilman Elders and Birdlife Australia looking for breeding hollows

Following recent droughts and consecutive years with lower than average rainfall, there seems to be a shortage of good quality seed in most bushland sites. As a result, we observed fewer signs of foraging at bushland sites previously known to be important sites for Black Cockatoos, but found increased signs of foraging and roosting around farmland and pine plantations. These findings reinforce the importance of preserving all large forage trees in the catchment and also supports a staged approach to clearing pine plantations.

These surveys will also help us to understand the long-term impacts of wildfire (2016 Yarloop Fires) for Carnaby breeding and roosting and will help us to develop effective and targeted projects to protect Black Cockatoos in the Peel-Harvey Catchment. Stay tuned as we collate our results following 15 days of intensive field surveys.

Group photo of the exploration team

If you suspect Black Cockatoos are foraging, roosting or breeding on your property, please report your findings to Birdlife Australia via their Birdata App (https://birdata.birdlife.org.au/) or email Birdlife at greatcockycount@birdlife.org.au.

This project is funded by the Australian Government Natural Heritage Trust and delivered by PHCC, a member of the Commonwealth Regional Delivery Partners panel.

We acknowledge the Noongar people as Traditional Custodians of this land and pay our respects to all Elders past and present