Swift Parrots??????

I was searching for Turquoise Parrots a few days at Nangar National Park near Eugowra NSW when out of nowhere a tightly formed flock of brilliant green parrots whipped accross the sparsely treed field I was in. They made no noise whatsoever. I noted pointed tails and green bodies but that was it. DEFINITELY not budgies. I saw the same flock later. Again tightly formed about 24 birds and shooting over a field at the forest edge not pausing to land. These birds did not strike me as musk lorikeets. I have filmed Swifties in Tassie but this flock never offered much of a view. Could I have possibly seen Swift Parrot this late in Nangar? Thanks Don