The Sibley Field Guide to Birds of Western North America
by David Allen Sibley
Knopf; Published: 2003-04-29; Turtleback; Book
Best price: $11.24
Price in other shops: $19.95

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A Supremely Bad Idea: Three Mad Birders and Their Quest to See It All
by Luke Dempsey
Bloomsbury USA; Published: 2008-07-22; Hardcover; Book
Best price: $15.00
Price in other shops: $24.99

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A Field Guide to the Birds of Eastern and Central North America
Houghton Mifflin; Published: 2002-04-04; Turtleback; Book
Best price: $10.63
Price in other shops: $19.95

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The Sibley Field Guide to Birds of Eastern North America
by David Allen Sibley, Rick Cech
Knopf; Published: 2003-04-29; Paperback; Book
Best price: $11.25
Price in other shops: $19.95

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Penguins and Antarctica (Magic Tree House Rsrch Gdes(R))
by Mary Pope Osborne, Natalie Pope Boyce
Random House Books for Young Readers; Published: 2008-09-23; Paperback; Book
Best price: $1.76
Price in other shops: $4.99

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Audubon Engagement Calendar 2009
by National Audubon Society
Workman Publishing; Artisan; Published: 2008-06-01; Spiral-bound; Book
Best price: $7.96
Price in other shops: $12.99

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National Geographic Field Guide to the Birds of North America, Fifth Edition
by Jon L. Dunn, Jonathan Alderfer
National Geographic; Published: 2006-11-07; Paperback; Book
Best price: $6.67
Price in other shops: $24.00

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Peterson Field Guide to Birds of North America (Peterson Field Guides(R))
by Roger Tory Peterson
Houghton Mifflin Co; Published: 2008-08-01; Paperback; Book
Best price: $10.44
Price in other shops: $26.00

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Bird Songs: 250 North American Birds in Song
by Les Beletsky
Chronicle Books; Published: 2006-09-21; Hardcover; Book
Best price: $28.21
Price in other shops: $45.00

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Wesley the Owl: The Remarkable Love Story of an Owl and His Girl
by Stacey O'Brien
Free Press; Published: 2008-08-19; Hardcover; Book
Best price: $13.38
Price in other shops: $23.00