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Black-Capped Gnatcatcher, a New Breeding Bird for the United States; with a Key to the North American Species of Polioptila

Authors
Allan R. Phillips, Steven Speich, William Harrison
Journal
Auk
Volume
90
Issue
2 (April-June)
Year
1973
Pages
257-262
File attachments
p0257-p0262.pdf (307.5 KB)

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