The standard text on the identification of the northern hemisphere's gulls, this book covers the plumage variation through age and subspecies of all 80 species in the region. With exhaustive coverage, detailed maps, and superb plates and photos, this book remains the definitive work on these birds, which represent the trickiest of all ID challenges.

"A monumental effort by the authors and takes a worthy 'podium finish' in this year's award (the BB/BTO Best Bird Book of the Year 2005)."

"(This book) has taken gull identification to a very advanced level and argues for some controversial species splits."