It sounded like a heavy hailstorm but it was about 250 of these feisty little buggers feeding on a pin oak tree that overhangs our house. They are messy eaters and all the 'scraps' were falling on my roof.
They are Corellas, at first glace they look like the sulphur-crested cockatoo. As noisy as.
I got them pretty excited by putting a cup of bird seed in the feeder tray (above).
As well as the pin oak, some of them had a good feed on a neighbour's berry bush (below).