Allen E. Edwards Lecturer, University of Washington, Seattle (2005); Special evening plenary lecture, International Ethological Conference, Budapest (2005); Invited guest lecturer, Annual Brazilian Ethology meeting (2007); Hans Sloane Memorial Lecture, Killyleagh, Northern Ireland (2008); Keynote Lecture, International conference on Acoustic Communication, Corvallis, Oregon (2008); Niko Tinbergen Lecture, London (2008); Blodwen Lloyd Binns Lecture, University of Glasgow (2009).