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.

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Klaus Malling Olsen and Hans Larsson
Christopher Helm
2003
London
United Kingdom
First printed in 2003 by Christopher Helm, an imprint of A&C Black Publishers Ltd. Reprinted with corrections 2004, reprinted 2004, 2005, 2010. Digital editions published 2010.
English , Global, Indo-Malay, Nearctic, Oceanic, Palearctic, , Gulls, Terns and Skimmers (Laridae), Helm Identification Guides 01/01/2003 0713670878 9780713670875 No value No value
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