<i>Parus major</i> 1 (of 2) (IMAGE) Max-Planck-Gesellschaft Caption Figure 1: Young great tits (Parus major) exploring the artificial trees in the experimental room. Credit Kees van Oers 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.