Wanted to see how well Processing would handle 3000 copies of overlapping pngs. I photoshopped out a set of 7 bird silhouettes and each flocking object grabs a random image from the set and rotates it according to its x/y angle. Voila, Hitchcock!
Next step is to use more controlled silhouettes and a larger variety. If I start to feel ambitious, I might model out the wings and body separately so I can recreate a rudimentary 3D simulation of a flying bird.