The Audubon Society Field Guide to North American Birds--western Region

Front Cover
Knopf, 1977 - Birds - 855 pages
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A revolutionary field guide. 627 photographs showing 457 Western breeding males plus 170 seasonal males, females, and immatures.

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Contents

Introduction
7
Parts of a Bird
20
How to Use the Keys
22
Copyright

51 other sections not shown

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About the author (1977)

Udvardy is Professor of Biological Sciences at California State University, Sacramento.

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