Bird Song Sequence 2 (AUDIO) Cell Press Your browser does not support the audio element. Caption Starlings heard a sequence of four elements, each following a different pattern made up of mostly the same elements. The birds had to learn to classify the whole sequence according to the pattern and were then later challenged to categorize the elements. Credit Courtesy of Timothy Gentner Usage Restrictions Credit Required. 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.