THE IOWA BROAD-WINGED HAWK 



131 



Measurements. Length, 16.50 to 18 inches; wing, 11 to 11.62 

 inches ; tail, about 7 inches. 



Range. From Winnipeg and Portage la Prairie southward 

 through Minnesota to central and southern Iowa (Des Moines and 

 Iowa City) ; Virginia ( ?). 



This dark form, so far as our present knowledge of its habits ex- 

 tends, differs in no respects from the common Broad-wing. Of the 

 type specimen Mr. Ward wrote, "The bird was sitting in a tree, but 

 started to fly when we came upon it. It was alone." The stomach 

 of this bird contained a partly digested frog, and the crop held the 

 fore-foot of a frog. 



No records of its nesting habits have been published. 

 Buteo platypterus iowensis Sub sp. Nov. 



Ridgway, R., Proc. U. S. Nat'l. Museum, Vol. IX, pp. 248-249, October, 

 1886. 



Keyes, Charles Rollin, and Williams, H. S., Preliminary Annotated Cata- 

 logue of the Birds of Iowa: Proc. Davenport Acad. Nat. Sci., Vol. 5, 

 p. 127, 1888. 



Anderson, R. M., Birds of Iowa, p. 251, 1907. 



Burns, Frank L., The Wilson Bulletin, Vol. XXIII, Nos. 3 and 4, 1911. 



Bailey, B. H., The Occurrence of Melanism in the Broad-winged Hawk, 

 (B. latissimus) : Proc. la. Acad. of Sci., XIX, pp. 191-192, 1912. 



Bailey, B. H., The Auk, Vol. XXXIV, pp. 73-75, January, 1917. 



Fig. 49. Map showing the distribution in Iowa of the Iowa Broad-winged 



Hawk. 



