Great tit Parus major (IMAGE) Forschungsverbund Berlin Caption Great tit Parus major Credit Copyright Bernard Castelein Usage Restrictions Only with reference of the Leibniz-IZW and the related research atricel or press release 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.