. Bulletin - Biological Survey. Zoology, Economic. Issued September 19, U. S. DEPARTMENT OF AGRICULTURE BIOLOGICAL SURVEY—BULLETIN No. 44 HENRY W. HENSHAW, Chief FOOD OF OUR MORE IMPORTANT FLYCATCHERS F. E. L. BEAL Assistant, Biological Survey. WASHINGTON GOVERNMENT PRINTING OFFICE 1912. 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 United States. Bureau of Biological Survey. Washington : Govt. print. off.

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherwashingtongovtprin