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Year
1997
Citation

England, A. S., M. J. Bechard, and C. S. Houston. 1997. Swainson's Hawk (Buteo swainsoni). No. 265 IN A. Poole and F. Gill, editors, The birds of North America. The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists' Union, Was

Keywords
Reference Code
A97ENG01NACA