. The Auk. Birds. The Auk. Vol. XXX. Plate Swainson's Hawk {Buteo sivainsoni). 1. Adult, Four Years Old. 2. Two Yeans Old. 3. One Mcnih ()1<I. (1 aiKl L' I'mni inoinm'd specimens.). 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 American Ornithologists' Union. Washington, D. C. : American Ornithologists' Union, etc.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1884