This volume serves as a comprehensive taxonomic and biological record of avian species within the Western Palearctic region, specifically addressing the classification and behavioral patterns of birds from Terns to Woodpeckers. Stanley Cramp, as the chief editor, synthesized decades of field research and observational data provided by a vast network of ornithologists. The text utilizes a standardized, rigorous framework to document the distribution, habitat, and life history of each species, ensuring consistency across the multi-volume series. This work functions as a primary reference for researchers seeking detailed morphological and ecological data on specific avian families.

Experts and ornithologists recognize this series as a foundational reference work for the study of Western Palearctic birds. Readers frequently note the high level of academic density and the exhaustive nature of the data provided in each entry.