. The distribution of bird life in the Urubamba valley of Peru; a report on the birds collected by the Yale university National geographic society's expeditions. Birds. U. S. NATIONAL MUSEUM BULLETIN 117 PL. 7. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, Frank M. (Frank Michler), 1864-1945. Washington, Govt. print. off.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, bookyear1921