132 THE RAPTORIAL BIRDS OP IOWA 



Genufe Asturina Vieillot. 



13. ASTURINA PLAGIATA Schlegel.- 346. 

 Mexican Goshawk. 



Field Characters. A medium sized, ashy-gray hawk, with white 

 at the base of the tail. 



Description. "Above, deep ashy-gray, top of head and back of 

 neck with five blackish shaft streaks; tail black, tipped with white, 

 and crossed by two or three narrow bands of white; feathers cover- 

 ering base of tail white; below, white, very regularly barred with 

 ashy, the stripes being farther apart on the flanks and belly." 

 (Fisher.) 



Measurements. Length, 16 to 18 inches; wing, 9.50 to 11.70 

 inches; tail, 670 to 8.20 inches (Fisher). 



Range. "Southern Arizona and lower Rio Grande Valley south 

 to Costa Rica; winters south of the United States; accidental in 

 southern Illinois." (A. O. U. Check List, 1910.) Also accidental in 

 Iowa. (W. G. Savage.) 



Fig. 50. Map showing the distribution in Iowa of the Mexican Goshawk. 



The Mexican Goshawk is a rare straggler from the Southwest. It 

 was seen in southern Illinois by Mr. Robert Ridgway. (Ornithology 

 of 111., p. 463, 1889.) 



A single instance of its occurrence is recorded by R. M. Anderson 



