Books in Animals-Wild-Birds (sorted alphabetically)
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Subspecies of the Mountain Chickadee Joseph Grinnell
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Summer Birds From the Yucatan Peninsula, Mexico Erwin E. Klaas
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Territory in Bird Life Henry Eliot Howard
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Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Marion Anne Jenkinson
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What bird is that? : A pocket museum of the land birds of the eastern United States, arranged according to season Frank M. Chapman
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Wild Birds in City Parks Herbert Eugene Walter and Alice Hall Walter
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Woodpeckers Fannie Hardy Eckstorm