. [Articles about birds from National geographic magazine]. Birds. Photo by George Shiras, 3rd COLONY OF GULLS ON ISLAND ADJOINING TIIL CORMORANTS Here the protective coloration makes them difficult to he seen, whether on skyline or rocks. Contrast with the cormorants on page 438 "1. 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 Washington, D. C. : National Geographic Society

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Keywords: ., bookpublisherwashingtondcnationalgeographicso, booksubjectbirds