Presents a study on the evolution of sexual selection in birds, as addressed through a research program by an ornithologist. This book also gives a portrait of the challenges and constraints of experimental design facing any field investigator working with animal behaviour. Geoff Hill shows just how valuable it is to tackle a topic from many directions and to stick at it: new research avenues always emerge ... in this book you will find him fairly open-minded and receptive to a multifactorial explanation. A very good read.