Have just come across a bird park I have never heard of before, and not listed at the beginning of the thread. It is located on the Sunshine Coast in Queensland and I came across it in a travel magazine that crossed my desk. Description is from the magazine.
Maleny Botanical Gardens & Bird World
The guided aviary walk allows kids to meet colourful and exotic birds from more than 60 countries. Meet the black cockatoo on an endless quest for romance, exotic macaws, colourful parrots, and many other feathered friends that will alight on your head and shoulders and feed from your hand.
According to their website the Aviary has been open since 2013, and combined admission to the aviary and gardens is $31.
Maleny Botanic Gardens | An Unforgettable Experience