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National Geographic Bird Coloration
Language: en
Pages: 256
Authors: Geoffrey Edward Hill
Categories: Nature
Type: BOOK - Published: 2010 - Publisher: National Geographic Books

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Why is a cardinal red and a bluebird blue? How has color camouflage evolved? These are just a few of the fascinating questions explored in this work on colorati
National Geographic Bird Coloration
Language: en
Pages: 256
Authors: Geoffrey Edward Hill
Categories: Nature
Type: BOOK - Published: 2010 - Publisher: National Geographic Books

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Why is a cardinal red and a bluebird blue? How has color camouflage evolved? These are just a few of the fascinating questions explored in this work on colorati
National Geographic Complete Birds of North America
Language: en
Pages: 748
Authors: Jonathan K. Alderfer
Categories: Nature
Type: BOOK - Published: 2014 - Publisher: National Geographic Books

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"Companion to National Geographic field guide to the birds of North America"--Cover.
The Book of Birds
Language: en
Pages: 166
Authors: National Geographic Society (U.S.)
Categories: Birds
Type: BOOK - Published: 1918 - Publisher:

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National Geographic Backyard Guide to the Birds of North America
Language: en
Pages: 260
Authors: Jonathan K. Alderfer
Categories: Nature
Type: BOOK - Published: 2011 - Publisher: National Geographic Books

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In North America alone, 60 million people identify themselves as bird-watchers, and most hone their skills right in their own backyards. This handy guide covers