Hi Kenneth,
There's a website called Birds in Backyards (administered by Birdlife Australia I believe) that has a good listing of Australian bird calls for an example see: https://www.birdsinbackyards.net/birds/featured/Top-40-Bird-Songs
You can find Youtube videos by Wild Ambience for bird recordings, also visit Graeme Chapman's website for a good list https://www.graemechapman.com.au/resources/bird-calls.php , iNaturalist Australia has Aust bird sounds too https://inaturalist.ala.org.au/projects/australian-bird-sounds
David Stewart and Fred van Gessel have produced CDs of bird calls, their recordings are also online (Fred's recordings are also used on the Birds in Backyards website)
Hope this helps,
Best Regards,
Leah
