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 comprehensive photographic guide to the world's gull species

With more than 50 gull species in the world, this family of seabirds poses some of the greatest field identification challenges of any bird group: age-related plumage changes, extensive variations within species, frequent hybridization, and complex distribution.

Gulls of the World takes on these challenges and is the first book to provide a comprehensive look at these birds. Concise text emphasizes field identification, with in-depth discussion of variations as well as coverage of habitat, status, and distribution. Abundant photographs highlight identification criteria and, crucially, factor in age and subspecific field separation. Informative species accounts are accompanied by detailed color range maps.

Gulls of the World is the most authoritative photographic guide to this remarkable bird family.

- The first book to provide in-depth coverage of all the world's gull species

- More than 600 stunning color photographs

- Concise text looks at variations, habitat, status, and distribution

- Informative species accounts and color range maps

A comprehensive photographic guide to the world's gull species With more than 50 gull species in the world, this family of seabirds poses some of the greatest field identification challenges of any bird group: age-related plumage changes, extensive variations within species, frequent hybridization, and complex distribution. Gulls of the World takes on these challenges and is the first book to provide a comprehensive look at these birds. Concise text emphasizes field identification, with in-depth discussion of variations as well as coverage of habitat, status, and distribution. Abundant photographs highlight identification criteria and, crucially, factor in age and subspecific field separation. Informative species accounts are accompanied by detailed color range maps. Gulls of the World is the most authoritative photographic guide to this remarkable bird family. The first book to provide in-depth coverage of all the world's gull species More than 600 stunning color photographs Concise text looks at variations, habitat, status, and distribution Informative species accounts and color range maps

Skuas (and jaegers) are a fascinating and -popular group of seabirds that make up a subfamily of just seven species. They can be -divided into two main groups: the larger species of Catharacta skuas which are mainly found in the southern hemisphere (with Great Skua breeding- in the north), and the three Stercorarius species (also known as jaegers) which breed in the -northern hemisphere. Both northern and southern skuas breed at high latitudes and several -species are long-distance migrants, -performing spectacular migrations through most of the world's oceans, -sometimes even flying overland. The individual plumage variation in some species is enormous, creating one of the most puzzling yet fascinating challenges in modern field identification. This is the first complete identification guide to the skuas of the world. It is designed to enable species -identification and correct -ageing, and the information presented is based on years of study in the field, detailed examination of photographs and -museum skins, and -extensive research of the -relevant literature. The comprehensive text is accompanied by twelve exquisite colour plates by Hans Larsson, illustrating a wide range of plumages. In -addition, there are eight pages of colour -photographs and numerous black and white photographs and drawings that show key -identification -features. With this book, the seabird enthusiast- should at last be able to -identify almost every skua encountered, whether on a seawatch or at sea.