Over the years, I have been fortunate to work in the laboratories of distinguished scientists who invited me to join their research group. Their charisma has had a profound influence on my scientific thinking. To these colleagues and friends, I would like to express my deepest gratitude:

• Dr. Jean-Charles Guyomarc’h, Laboratoire d’Ethologie, Université de Rennes 1
• Dr. Jean-Claude Lefeuvre, Museum National d’Histoire Naturelle, Laboratoire d’Evolution des Systèmes Naturels et Modifiés, Université de Rennes 1
• Dr. Lesley J. Rogers, Centre for Neuroscience and Animal Behaviour, University of New England
• Dr. Peter J.B. Slater, School of Biology, Bird and Mammal Acoustic Communication Group, University of St-Andrews
• Dr. Daniel Margoliash, Department of Organismal Biology and Anatomy, The University of Chicago

Sources of funding include:

• Fondation Fyssen
• European Community Science Program (DG XII)
• Association for the Study of Animal Behaviour (ASSAB)
• Medical Research Council (MRC)
• National Institute on Deafness and Other Communication Disorders (NIDCD)

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