This month, some of the NACC NRM team ventured out to Murchison House Station to monitor the local Carnaby’s cockatoo population and check out any happenings within their hollows.
Amid green grasslands of blooming colour, Biodiversity Program Coordinator Jarna Kendle, Communications Officer Phoebe Royce, and Birdlife Midwest volunteer Heather Beswick teamed up with station owner Belinda Carruth to monitor around 20 hollows within a secured area of the property.
Among the 20 hollows inspected, eight of these were artificial, having been funded and installed in 2022 by NACC NRM’s past ‘Protecting WA’s Black Cocatoos’ project. These hollows encourage flocks to continue breeding in the area and provide additional homes for Carnaby’s, who are forced to compete with other species to claim hollows.


With the looming risk of becoming bogged given recent high rainfall, the team tackled the expedition on foot, clocking around 10kms of walking through wildflowers and wet grass. While this might not sound like much fun, there was certainly a lot of excitement to see the landscape nourished and coming to life leading up to Spring!
One of the biggest surprises of the day was the abundance of water in the area, which posed a challenge for some inspections and prohibited the team from accessing hollows surrounded by deep bodies of water! The team set out in the morning, and although the Carnaby’s were a little shy at first, eventually three paired up couples were spotted cuddling and canoodling in the tree tops, before a female was sighted prospecting for a suitable new hollow! As these monogamous cockatoos mate for life, observing the couples and their courting behaviours was a special highlight.

A crucial part of monitoring hollows is the courteous ‘tap and flush’ to get the ball rolling. Essentially, this is like knocking on the door and offering any animals within the hollow a chance to safely make an exit before the team send in a camera on an extendable pole. Without the tap and flush, the camera could alarm any inhabitants and cause a bird to erratically fly out and injure itself. This method was certainly validated when, upon Jarna carrying out a ‘tap and flush’ on a hollow, a Boobook Owl was flushed out and its egg was then discovered by camera – an exciting find! Also spotted were Pink and Grey Galahs, a Blue Wren, a Whistling Kite and some Australian Ringneck parrots, adding to the diversity of the day’s sightings.
The following day, Jarna continued out in the field, this time joined by NACC NRM Programs and Operations Manager Kane Watson to tackle a different area of Murchison House Station. While monitoring, Jarna and Kane stumbled up a duck occupying a hollow and diligently sitting on an egg, a testament to the thriving avian life in the area and certainly an unlikely encounter.
Overall, the trip to Murchison House Station offered valuable insights in the lead up to returning later in September for additional monitoring. Stay tuned for more exciting discoveries from the team, with ongoing updates to come!
This project is jointly funded by the Australian Government Natural Heritage Trust and NACC NRM, a member of the Commonwealth Regional Delivery Partners panel.