every time you click the middle button a new bird is born. each bird gets a random color, flies in a random direction, and moves its head around independent of all the other birds. if a bird flies too far, it'll come back. every so often if a bird is close enough to the screen, it'll come up and stare at you. these birds are based on hummingbirds, however i slowed down the wing speed because the actual rate of 10-15 beats/second is too fast for the human eye.
i also gave them sunglasses because they look cool.