15 



B. Eyes on sides of head ; face not flat ; bill not spec- 

 ially short. 

 a. P^xtent nearly 3 feet; wings broad; tail relatively 

 short ; coloration dark brown and white, 



Broad-winged Hawk. 

 aa. Extent 2 feet or less ; wings and tail long, 

 b. Feet not noticealily long and slender. 



Back and tail bright rufous with more or less 



black ; under parts white with more or less 



streaking; summer resident, Spakijow Hawk. 



Upper parts bluish-ash or dark umber-brown ; 



under parts whitish, more or less heavily streaked 



with blackish ; winter visitor. Pigeon Haavk. 



bb. Feet long and slender ; above dark slate color ; 



beneath tawny-white cross-barred or streaked 



with rufous, Sharp-shinned Hawk. 



. Tree -climbing Birds, with straight, sharp beak and stiff 



tail with pointed feathers ; flight very undulating. 



A. Length a foot or more. 



Dull black, with some red and white on head and 

 neck, Pileated Woodpecker. 



Olive-brown, marked with black above ; rump white ; 

 beneath beautifully spotted with black. Flicker. 



B. Length 10 inches or less. 



a. Lustrous black ; secondaries and''[upper tail cov- 

 erts white ; whole head crimson, 



Red-headed Woodpecker. 

 aa. Variegated black and white, 

 b. Yellowish on back and beneath ; crown crimson. 



Yellow-bellied Woodpecker. 

 bb. No yellowish tinge; little or no red on head, 

 c. Length G to 7 inches, DownyIWoodpecker. 



cc. Length 9 to 10 inches, 



Middle of back, white. Hairy Woodpecker. 



Middle of back, black, Arctic 3-toed Woodpecker. 



