Dance graphic (IMAGE) Cornell University Caption A. shows the leg movements of the male on his display platform and in the surrounding vegetation. B. shows the timing of (a) gronking song, and (b) stage shaking. G = gronk elements, C = cackle element. Credit Artwork by Bryce Robinson. Graphic by Fiona Backhouse, Cornell lab of Ornithology. Usage Restrictions Only for use with articles about this research. License Original 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.