Appendix, 



b. Feet not feathered to toes. Head 

 streaked brown and white; back brown; 

 breast bufFy, heavily spotted and streaked 

 with brown. Size large; feet small. 

 (See 19 above.) 



Swainson's Hawk . . 21 



II. No white patch on upper tail-coverts. 



1. Back slaty or lead color, sometimes 

 brownish in tone. 



a. Breast barred with reddish brown. 



a'. Head like back. Length 11 to 13 

 inches. 



Adult Sharp-shinned Hawk 16 



b' . Head blackish brown in contrast to 

 back. Length 15:5 to 19 inches. 

 Adult Cooper's Hawk . 17 



b. Breast barred with fine zigzag j/<^/y lines. 



Adult Western Goshawk 18 



c. Breast bufFy, with dark brown streaks. 

 Length 1 1 inches. 



Male Pigeon Hawk . 28 



d. Breast white or bufFy, the sides and belly 

 barred with black (streaked with black in 

 young). Back barred with blackish 

 plumbeous. 



Duck Hawk ... 27 



2. Back brown, sometimes inclining to red- 

 dish or grayish. 



a. Tail bright rufous with one or more 



bars. 



a' . Size large. Top of head dark brown 



like back, or with but a trace of rufous. 



Adult Western Red-tail . 19 



271 



