This book provides a comprehensive overview of gulls, addressing common knowledge gaps about these familiar seabirds. Professor John C. Coulson, an expert in the field, details the lives and habits of over 50 gull species, many of which have adapted to urban environments. The book delves into the complexities of gull taxonomy and classification, exploring what defines a gull physically and genetically. It is structured by larger gull groups, examining their distribution, life cycles, behaviors, and adaptation to human proximity, enhanced by color photography.

As a new addition to the esteemed Collins New Naturalist library, 'Gulls' is positioned to offer a definitive and authoritative account of these common birds. The detailed structure, covering taxonomy, genetics, behavior, and adaptation, suggests a thorough and scholarly approach. The inclusion of extensive color photography indicates a visually engaging presentation, likely appealing to both amateur naturalists and serious ornithologists seeking a comprehensive resource on gull species.