Limpkins are easier to hear than see. Its common vocalization is a loud wild wail or screamwith some rattling quality, represented as "kwEEEeeer or klAAAar." This call is most often given at night and at dawn and dusk. It has been used for jungle sound effects in Tarzan filmsand for the hippogriff in the film Harry Potter and the Prisoner of Azkaban. Other calls include "wooden clicking", clucks, and in alarm, a "piercing bihk, bihk..."