Figure 2 (IMAGE) University of Copenhagen Caption Andean cock-of-the-rock at its lek at 2000 m in the Peruvian Andes. Photographer: Jesper Sonne/CMEC Credit Jesper Sonne/CMEC Usage Restrictions Use is permitted only with credit as listed. 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.