. Bulletin - Biological Survey. Zoology, Economic. 20 NORTH AMERICAN HERONS AND THEIR Fig. 6.—White-faced glossy ibis (Plegadis guarauna).. 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