Gulls of the World: A Photographic GuideHardcover, 1 November 2017

Until recently, gulls were a group that inspired dread among birders, due to the bewildering variety of plumage, age groups, and races, many of which are very difficult indeed to separate, even to species. Things changed in 2003 with the publication of Klaus Malling Olsen's Gulls of Europe, Asia and North America, a plate-based title that made accurate identification of gulls a realistic possibility for the first time. Gulls of the World is a companion and successor to that seminal work.

This photographic identification guide covers all of the world's gull species, tackling some of the stiffest ID challenges in birding. Concise text places particular emphasis placed on field identification, with detailed discussion of variation, and there is coverage of habitat, status, and distribution. The text is followed by a series of high-quality photographs, carefully selected to highlight identification criteria and, crucially, to allow age and sub-specific separation in the field. The species entries are complemented by an accurate color range map.