Penguins’ vocalizations sound like a loud noise, but each penguin can identify the vocalizations of its mate and both parents can recognize the sound produced by their chicks. This hearing capability is crucial to take care of their offspring in a populated colony where all sounds are similar.

Also, communication is vital during courtship and mate selection. Penguins not only communicate through vocalization, but they also perform a set of movements called displays.

Penguins produce three kinds of sounds.

1. The Contact Call. Used to identify each other.
2. The Display Call. Used between partners in a colony.
3. The Threat Call. Used to emit a warning.