. The chordates. Chordata. Fig. 427. Great blue heron, Ardea herodias. (Courtesy, Knowlton and Ridgway: "Birds of the World," New York, Henry Holt & Co., Inc.). Fig. 428. Common buzzard, Buteo vulgaris. Leach. (Courtesy, Saunders: "Manual of British Birds," London, Gurney & Jackson.). 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 Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blak


. The chordates. Chordata. Fig. 427. Great blue heron, Ardea herodias. (Courtesy, Knowlton and Ridgway: "Birds of the World," New York, Henry Holt & Co., Inc.). Fig. 428. Common buzzard, Buteo vulgaris. Leach. (Courtesy, Saunders: "Manual of British Birds," London, Gurney & Jackson.). 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 Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston


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