I have the privilege of conducting research on the regulation of natural gas companies in Australia and came across the below coat of arms.
“The generally accepted symbols of Australia are golden wattle, the red kangaroo, and the emu.Although they are not officially proclaimed as national symbols, they feature in the Coat of Arms pictured.
The Coat of Arms of the State of Western Australia was granted by Her Majesty, Queen Elizabeth II, by Royal Warrant dated the 17th day of March, 1969.
The Black Swan was first recorded by the Dutch navigator Vlamingh in January 1697 in the Swan Estuary. Although it is to be found throughout Australia, this graceful bird has been regarded with special affection by many generations of Western Australians and has long been used to identify things Western Australian.”
(Source: Irish Australia on the Web)