This book is a legacy of knowlegement on the field of the ornithology. With just an overlook of the References you will see that is a very complete synopsis of the worldwide and long time research on the life of the birds. The chapters are divided in main topics covering anatomy and physiology, behavior, reproduction, ecology, migration, evolution and the relationship among birds and humans. Each chapter is widely undertaked, clearly described and illustrated. This is not only a good book to read but it is a great source of information that you can use all the time you need search for anything you want to know about the birds.