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Clines in the Yellow-throats of Western North America
William H. Behle

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Life History of the White-breasted Blue Mockingbird
Alexander F. Skutch

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Critical Notes on Limnodromus Semipalmatus
A. L. Rand

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Habitat Distribution of Breeding Birds in Southeastern Washington
Philip C. Dumas

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Cooper Club Meetings
The Condor

Notes and News
The Condor

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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White-tailed Ptarmigan in the Mission Mountains, Montana
Philip L. Wright and Clinton H. Conaway

Amphibia in Robin's Diet
Fred G. Evenden

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Bird Records from Western Montana
L. R. Mewaldt