Bird Blue Throat (IMAGE) University of Southern Denmark Caption Blue throat is pictured. When birds and humans sing it sounds completely different, but now new research reported in the journal <em>Nature Communications</em> shows that the very same physical mechanisms are at play when a bird sings and a human speaks. Credit Ruben Smit/SDU 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.