The Swallows of Capistrano The group motion of birds is a facinating aspect of Nature. Syncronized movements of birds are as beautiful as they are intriguing to watch. Flocks are made up of individual birds yet they act in concert fluidly. In the Swallows of Capistrano we observe a flock of virtual birds as they occupy their space. We can alter the bird's routine by attracting them with seeds. Terry Franguiadakis