 National Geographic Field Guide to the Birds of North America, Fifth Edition Author: Jon L. Dunn Manufacturer: National Geographic ListPrice: $24.00 Offer: $16.32
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 The Sibley Field Guide to Birds of Eastern North America Author: David Allen Sibley Manufacturer: Knopf ListPrice: $19.95 Offer: $13.57
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 The Sibley Field Guide to Birds of Western North America Author: David Allen Sibley Manufacturer: Knopf ListPrice: $19.95 Offer: $13.57
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 The Sibley Guide to Birds Author: David Allen Sibley Manufacturer: Knopf ListPrice: $35.00 Offer: $23.10
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 The Birds of Costa Rica: A Field Guide Author: Richard Garrigues Manufacturer: Cornell University Press ListPrice: $29.95 Offer: $19.77
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 Hawks from Every Angle: How to Identify Raptors In Flight Author: Jerry Liguori Manufacturer: Princeton University Press ListPrice: $19.95 Offer: $13.57
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 Birds of Peru (Princeton Field Guides) Author: Thomas S. Schulenberg Manufacturer: Princeton University Press ListPrice: $49.50 Offer: $32.67
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 A Guide to the Birds of Costa Rica (Comstock Book) Author: F. Gary Stiles Manufacturer: Cornell University Press ListPrice: $39.95 Offer: $26.37
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 A Guide to the Birds of Mexico and Northern Central America Author: Steve N.G. Howell Manufacturer: Oxford University Press, USA ListPrice: $49.95 Offer: $40.29
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 The Shorebird Guide Author: Richard Crossley Manufacturer: Houghton Mifflin ListPrice: $24.95 Offer: $16.47
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 Field Guide to the Birds of the Middle East (Princeton Field Guides) Author: R. F. Porter Manufacturer: Princeton University Press ListPrice: $40.00 Offer: $26.40
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 Reptiles and Amphibians of Europe (Princeton Field Guides) Author: E. Nicholas Arnold Manufacturer: Princeton University Press ListPrice: $42.50 Offer: $32.30
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 Birds of Southeast Asia (Princeton Field Guides) Author: Craig Robson Manufacturer: Princeton University Press ListPrice: $35.00 Offer: $23.10
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 The Sibley Guide to Birds (Audubon Society Nature Guides Ser.) Author: David Allen Sibley Manufacturer: Knopf ListPrice: $35.00
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 Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka and the Maldives Author: Richard Grimmett Manufacturer: Princeton University Press ListPrice: $35.00 Offer: $23.10
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 Peterson Reference Guides: Gulls of the Americas Author: Jon Dunn Manufacturer: Houghton Mifflin ListPrice: $35.00 Offer: $23.10
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 The Complete Guide to the Birds of Europe Author: Lars Svensson Manufacturer: Princeton University Press ListPrice: $60.00 Offer: $42.00
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 The Grail Bird: Hot on the Trail of the Ivory-billed Woodpecker Author: Tim Gallagher Manufacturer: Houghton Mifflin ListPrice: $25.00
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 Shorebirds of North America: The Photographic Guide Author: Dennis Paulson Manufacturer: Princeton University Press ListPrice: $29.95 Offer: $19.77
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 A Field Guide to the Birds of Britain and Europe Author: Guy Mountfort Manufacturer: Houghton Mifflin ListPrice: $22.00 Offer: $16.50
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 A Field Guide to the Birds of China Author: John MacKinnon Manufacturer: Oxford University Press, USA ListPrice: $104.99 Offer: $104.99
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 Birds of Africa South of the Sahara (Princeton Field Guides) Author: Ian Sinclair Manufacturer: Princeton University Press ListPrice: $49.50
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 Mammals of Europe (Princeton Field Guides) Author: David W. Macdonald Manufacturer: Princeton University Press ListPrice: $34.95 Offer: $26.56
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 Pocket Guide to the Birds of Britain and North-West Europe Author: Chris Kightley Manufacturer: Yale University Press ListPrice: $27.00 Offer: $27.00
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 Where to Watch Birds in World Cities Author: Paul Milne Manufacturer: Yale University Press ListPrice: $30.00 Offer: $21.01
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 Birds of the Mediterranean: A Photographic Guide (Photographic Guides (Yale University Press)) Author: Paul Sterry Manufacturer: Yale University Press ListPrice: $29.00 Offer: $29.00
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 Where to Watch Birds in Europe and Russia Author: Nigel Wheatley Manufacturer: Princeton University Press ListPrice: $24.95 Offer: $24.95
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 A Guide to the Birds of Southeast Asia Author: Craig Robson Manufacturer: Princeton University Press ListPrice: $85.00 Offer: $63.75
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 Butterflies of Europe (Princeton Field Guides) Author: Tom Tolman Manufacturer: Princeton University Press ListPrice: $32.95
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 Pocket Guide to the Birds of Britain and North-West Europe (Helm Field Guides) Author: Chris Kightley Manufacturer: Christopher Helm Publishers Ltd ListPrice: $19.84 Offer: $19.84
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 Birds of Britain: An Introduction to Familiar Species of England, Scotland & Wales (Pocket Naturalist - Waterford Press) Author: James Kavanagh Manufacturer: Waterford Press ListPrice: $5.95 Offer: $5.95
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 Where to Watch Birds in Switzerland (Where to Watch Birds) Author: Marco Sacchi Manufacturer: A&C Black ListPrice: $17.95
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 Complete Mediterranean Wildlife Author: Paul Sterry Manufacturer: Trafalgar Square Publishing ListPrice: $28.22 Offer: $22.29
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 Wild Flowers of Britain & Northern Europe (Collins Pocket Guide) Author: Richard Fitter Manufacturer: HarperCollins UK ListPrice: $29.95
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A Field Guide to the Birds of Peru Author: James F. Clements Manufacturer: Ibis Publishing ListPrice: $60.00
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