Anja Russ, Helmholtz Association (image) Helmholtz Association Caption This is the biologist Anja Ruß holding a fresh Ringed Blackbird male in his hand. Together with helpers she has observed and 2011 and 2012 a total of 15 weeks, in the spring of the behavior of blackbirds in a 215 acre area in Leipzig evaluated. Credit André Künzelmann / UFZ Usage Restrictions None 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.