Animal Migration, Navigation, and Homing: Symposium Held at the University of Tübingen August 17-20, 1977

Seven years have elapsed between this and the preced- ing major symposium on animal orientation and naviga- tion, held on Wallops Island, Va., USA in 1970. Never before between two symposia in this field has there been such an enormous increase - more truly an explo- sion - of new data, new evidence, new ideas, and meth- ods. Moreover, environmental awareness has also in- creased tremendously. The essential role of animals as bio-indicators, the economic importance of dwindling stocks of fi...