Here's a flocking bird simulation I made using Cinema 4D and After Effects. I rendered three flap cycles from a rig I built with CD tools then used them as sprites for Particular.http://vimeo.com/18410165
One of the Flap Cycleshttp://www.vfxdaily.com/wp-content/uploads/2011/01/Public.mov
Post on my sitehttp://www.vfxdaily.com/?p=139
Next I'm going to see if I can make something similar staying inside Cinema 4D.