Institution: | Max-Planck-Institut für Verhaltensphysiologie, Postfach 1564, D-82305 Seewiesen, Germany;;Institute of Zoology, University of Berne, Baltzerstr. 6, CH-3012 Bern, Switzerland;and;Institute of Zoo &Wildlife Research, Alfred-Kowalke-Str. 17, D-10315 Berlin, Germany |