Adelie Penguin Courtship Call (AUDIO) National Evolutionary Synthesis Center (NESCent) Your browser does not support the audio element. Caption Male penguins serenade prospective mates with a call known as an "ecstatic display call." Credit Recorded by Emma Marks Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.