I have recently received this book and immediately was impressed by the quality and depth of the information. Sylvia Warblers are a species of birds which I knew little about and often thought I wanted to learn more about. In this book I think I have found the answer. This is a really comprehensive study of Sylvia with excellent artwork and photography. Expensive yes, but it deserves to be for the wealth of information contained between its covers. Well made, written and structured. I would recommend this book if you want to learn more about these fascinating birds.