Book excerpt: Some Australian native birds become childhood sweethearts and court for years before they get 'married'. Others divorce because of personality clashes and different skill levels. Many negotiate their parenting duties. But how do these personal life events link to long-lasting bonds, long life-spans and exceptional overall intelligence? Professor Gisela Kaplan, an eminent voice in animal behaviour, and particularly bird behaviour, draws on the latest insights in the evolution of particular cognitive and social abilities. She uncovers motivations and attractions in partner choice that are far more complex than was once believed. She shows how humans and birds may be more alike in attachment and mating behaviour than we think - despite the enormous evolutionary distance between us. Based on a wealth of original research and complemented by illustrations and colour photographs, Bird Bonds is a valuable resource and a beguiling insight into the world of the birds around us.