BIBLIOGRAPHY OP THE FERRUGINOUS ROUGH-LEG 141 



Bailey, B. H., Two Hundred Wild Birds of Iowa, p. 62, 1906. 



Widmann, Otto, A Preliminary Catalogue of the Birds of Missouri: 



Trans. Acad. Sci., St. Louis, pp. 99-100, 1907. 

 Anderson, R. M., Birds of Iowa, p. 252, 1907. ' 

 Cory, C. B., Birds of Illinois and Wisconsin, p.. 469, 1909. 

 A. O. U. Check List, p. 161, 1910. 

 Chapman, F. M., Birds of Eastern North America, p. 300, 1912. 



Fig. 56. Map showing the distribution in Iowa of the Ferruginous Rough- 

 legged H'awk. 



