The 'official' State list (at least for legislative purposes) is maintained by the WA Museum as part of their official "Checklist of Terrestrial Vertebrate Fauna", but their list differs from ours in including Ashmore Reef, and also in applying its own rather unique taxonomic decisions (which, for example, recognises Western Whistler as a full species, but not Western Yellow Robin).
Our WA list includes island and sea-based records from Australian waters out to 200 nautical miles from the mainland, unless closer to another country. That last clause excludes Ashmore and Cartier Reefs, which are not only much closer to Timor than Australia, but are also explicitly excised from Western Australia geopolitically as External Territories. However the vagrant-rich Browse Island is much closer to WA and also gazetted as a state nature reserve, so is included.
Download the latest LCB WA State Checklist here:
WA State Checklist IOC 7.1 2017
|The many 'Westerns' of Western Australia. From top left: Western Corella, Western Rosella, Western Spinebill, Western Thornbill, Western Whistler, Western Wattlebird.|
We also maintain a handy checklist of the endemic (and 'almost endemic') bird taxa of WA, including endemic subspecies:
Checklist of WA endemics
or see our previous blogs on the topic:
WA Endemic subspecies:
Part 1: Southwest
Part 2: Pilbara and arid zone
Part 3: Kimberley