Hi Evan,
I would think you should be able to add
the following to your possibles list:-
Red-rumped parrot
Little Corella
Long-billed Corella
Eastern Rosella
We certainly get all of those in Penrith
about 3 miles from Lapstone. (Of interest, I have never seen a King Parrot or a
Gang Gang in Penrith, although Kings in particular were very common when we
lived in Glenbrook which is not far from Lapstone although somewhat higher in
altitude).
Regards, Mike Simpson
Penrith, NSW
http://members.optusnet.com.au/ozbirds