Contributors. Preface. M.L. East and H. Ho fer, Conflict and Co-operation in a Female Dominated Society: A Re- assessment of the ‘Hyper-aggressive’ Image of Spotted Hyenas. C. ten Cate, H. Slabbekoorn, and M.R. Ballintijn, Bird Song and Male-male Competition: Causes and Consequences of Vocal Variability in the Collared Dove (Streptopelia Decaocto). R.W. Byrn e, Imitation of Novel Complex Actions: What Does the Evidence from Animals Mean? L.J. Rogers, Lateralization in Verte brates: Its Early Evolution, General Pattern and Development. S.H. Hulse, Auditory Scene Analysis in Animal Communication.
P.K. Stoddard, Electric Signals: Predation, Sex, and Environmental Constraints. T. Aubin and P. Jouventi n, How to Vocally Identify Kin in a Crowd: The Penguin Model. Index. Contents of Previous Volumes.