In Alfred Hitchcock’s The Birds (1963), flocks have acquired some strange way of communicating and coordinating actions. The birds form swarms with a purpose: to challenge the peace of a small town. Mrs. Bundy points out that they should not “have sufficient intelligence to launch a massed attack.” (The Birds)
Along the ensuing violence, the film has a political under-text: the birds are fighting against the ignorant tyrant “mankind” by transcending their non-existence as a group. In the final scene the birds have taken over the place and rule absolutely and mindlessly. The Birds was a film that matched the American political climate of the sixties, with references to the civil rights movement.