108 



THE RAPTORIAL BIRDS OF IOWA 



Fig. 37. Krider's Hawk. 



9A. BUTEO BOREALIS KRIDERI Hoopes. 337a 

 Krider's Hawk. Krider's Red-tail. 



Field Characters. Similar to the Eastern Red-tail, but lighter both 

 above and below. A very light colored hawk. 



Description. Above showing much white on the back, the head 

 still lighter, the white often predominating. Below, white with an 

 indefinite belt of darker spots across lower breast. Tail pale red in 

 adults, and in the immature with several blackish bars. 



Measurements. Within the range of those given for the Red- 

 tailed Hawk. 



