. Wonders of the bird world. Birds. CHAPTER XII THE MIGRATION Ol' lllkliS. The Li^lithc HeligulaiiJ (after Seebohni). Scanty knowledje of the subicct — Summary of obsen-ations by Mr. W. Eagle Clarke—Giitke's observations in Heligoland— Migration in the Mississippi Valley—IMigration in the North Sea —Mr. Chapman's remarks on the flight of birds. There is no subject in the ornithological world about which people speak and write so glibly as on the " Migration of Birds," and yet there is no branch of Natural Historj' of which less is really understood. Those who have laboured. Ple
. Wonders of the bird world. Birds. CHAPTER XII THE MIGRATION Ol' lllkliS. The Li^lithc HeligulaiiJ (after Seebohni). Scanty knowledje of the subicct — Summary of obsen-ations by Mr. W. Eagle Clarke—Giitke's observations in Heligoland— Migration in the Mississippi Valley—IMigration in the North Sea —Mr. Chapman's remarks on the flight of birds. There is no subject in the ornithological world about which people speak and write so glibly as on the " Migration of Birds," and yet there is no branch of Natural Historj' of which less is really understood. Those who have laboured. 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 Sharpe, Richard Bowdler, 1847-1909. New York, Frederick A. Stokes company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, bookyear1921
