ACCIPITRID^): Hawks, Eagles, Kites, etc. 



103 



Res. Common Sea-level 

 to high mountains. Nests in- 

 differently from Lower Sonoran 

 Zone through Transition. Most 

 numerous in low country in 

 winter, and probably occurs in 

 greater numbers in Arizona 

 than in California. 



Western Red-tuil 



Res. Common locally; 

 absent from extensive regions. 

 Occurs in great flocks in mi- 

 grations; these appear less 

 common west of the California 

 desert divide than in deserts 

 eastward. Nests indifferently 

 in trees, giant cactus, or tree- 

 yuccas, or even on the ground. 



California Res. Oc- 

 casional Low open country 

 west of the desert divide. Tall 

 willows of stream-bottoms are 

 its favorite nesting-site, but, 

 lacking these, oaks are often 

 utilized. 



Red-bell led Hawk 



