Lessee... take a variable level of detail mesh of a representative of the species, throw in some random variations in geometry, size and texture (of course we'll use normal maps and pixel shaders to achieve near photorealistic renders at interactive frame rates), stir in a reasonable flocking algorithm with appropriate environmental goals and influences (flock toward food, away from predators), display on multiple, floor to ceiling edge matched super high resolution projectors. Mix in some randomly selected song bird audio samples, and burn some pine scented candles....

Don't shoot the screens, that'll just make holes. Aim at the noisy boxes in the ceiling. <img src="/images/graemlins/grin.gif" alt="" />