Know the mythos behind the bird call. Before you can use it in appropriate fashion, you must know the origin of the bird call. In some neighborhoods, the police are seen as an adversary, so in order to warn fellow residents of their arrival, people use this bird call. The idea is that police are easily fooled, and the bird call can confuse and disorient the officers, causing them to do their job improperly and ultimately leave.
Listen to the music of Birdman. The bird call is one of Birdman’s signature lyrics, and listening to it will provide you with knowledge of how to do it properly.
Attempt the bird call. All you need to do is clap your hands twice and follow it with a “brrrrrrrrr.” The “brrrrrrrr” is supposed to sound as close to a pigeon’s coo as possible. If you only have one hand, then simply slap it twice against your leg instead.
Practice in the privacy of your home before attempting to "bird call" in public. You don’t want to appear foolish by giving a halfhearted or incorrect bird call, so be sure you have it down before attempting in front of your peers.