This book represents the definitive photographic guide to gulls by the world's greatest authority on gull identification Klaus Malling Olsen This outstanding new guide covers all of the world's gull species tackling some of the most notoriously difficult identification & taxonomic challenges in birding Concise text
- complemented by an accurate colour range map
- places particular emphasis on field identification with detailed discussion of variation & coverage of habitat status & distribution Each photograph has been carefully selected to highlight identification criteria & crucially to allow age & subspecific separation in the field This book is an invaluable tool for identifying gulls featuring the most sought-after rarities as well as beautiful easy-to-identify species