All of you Batkids have a “bird call”. A whistle sound unique to each of you kids to let your father figure Bruce, or rather, Batman, know whether or not you’re alright and where exactly you are after a mission.

Dick has one, Jason has one, Tim has one, Damian has one, you have one. It’s very helpful.

You just finished a mission, and you hear Batman’s whistle. Followed by Dick’s, then Jason, Tim, and Damian. Not it’s just you who has to whistle back to signal that you’re okay or not.