This fourth volume in the series "
Virus Infections of Vertebrates" provides an up-to-date overview of the main viruses affecting avian species. Its approach is pragmatic, with an emphasis on essential and useful facts rather than on details of disease history or molecular data. The organization of the chapters is strictly hierarchical and follows
virus taxonomy. At the beginning of each chapter, a short family description discussing infections caused by viruses in
this family is given. The chapters have been written either in an epic style, without subdivisions (when only few data were available) or in subdivisions dedicated to virus properties (physical and chemical characteristics