Book excerpt: A Yale-educated professor of biology and a GG finalist for Silence of the Songbirds, Bridget Stutchbury roams forests studying the social lives and sexual antics of birds, sharing with us the curious reasons for their strange behaviour, bright colouring and elaborate songs. Are birds truly faithful to their mates? Stutchbury explains the science behind the surprisingly sophisticated and often amusing habits of birds, drawing on examples from around the world. In The Bird Detective, the author explains why some birds readily “divorce,” why parents don’t treat their sons and daughters equally, why females sneak in quick sex with neighbouring males and why some adults forgo breeding altogether. Stutchbury writes about the territorial nature of birds and describes their nesting habits, revealing why some species prefer to live in over-crowded groups. Perhaps most important, she illuminates how climate change and other pressures of the modern world are forcing birds to change their habits as they fight for their very survival.