BIBLIOGRAPHY OF THE BROAD- WINGED HAWK 



121 



Fig-. 47. Map showing the distribution in Iowa of the Broad-winged Hawk. 



Buteo platypterus. (Vieillot). 



Say, Thomas, in Major S. H. Long's Account of an Expedition from 

 Pittsburgh to the Rocky Mts., 1819-20, p. 370. (Engineers Canton- 

 ment, Pottawattamie County.) 



Allen, J. A., Catalogue of the Birds of Iowa: Geology of Iowa, White, 

 Vol. 2, App. B, p. 424, 1870. 



Trippe, T. M., Notes on the Birds of Southern Iowa: Proceedings of 

 the Boston Society of Natural Sciences, Vol. 15, p. 242, 1872. (Deca- 

 tur and Mahaska Counties.) 



Ridgway, R., Description of a Melanistic Specimen of Buteo latissimus: 

 Proceedings of the U. S. National Museum, Vol. 10, pp. 248-249, 1886. 

 (Clear Lake.) 



Cooke, W. W., Report on the Bird Migration in the Mississippi Valley, 

 1884-85: U. S. Department of Agriculture, Division of Economic 

 Ornithology, Bull. 2, p. 116. 



G. D., H. E. and Morton Peck. Ibid. (LaPorte City.) 



Keyes, Charles Rollin, and Williams, H. S., M. D., Preliminary Annotated 

 Catalogue of the Birds of Iowa: Proceedings of the Davenport Acad- 

 emy of Natural Sciences, Vol. 5, p. 127, 1888. 



Ridgway, Robert, Ibid. (Crystal lake, Hancock County.) 



