Male Adelie Penguin (IMAGE) National Evolutionary Synthesis Center (NESCent) Caption To lure a female to his nest, a male flaps his flippers, points his beak to the sky, and emits a series of loud trills and squawks. Credit Photo 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.