Zebra Finch Close Up (IMAGE) Michigan State University Caption Zebra finches could hold the key to finding the biological source of stuttering. The male finch, right, learns to sing early in life. The female, left, does not sing. Credit Michigan State University 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.