Male Pyrrhuloxia (IMAGE) University of Arizona Caption A combination of 16 different carotenoids make up striking coloration of male pyrrhuloxia. Credit Alex Badyaev/tenbestphotos.com Usage Restrictions This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated. 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.