192 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Toes, three; crown, 

 black ; back, black, 

 without white. 



Arctic Three=toed Woodpecker. 



Picoides arcticus (female}. 

 See No. 328. 



Toes, three; crown, yel- 

 low ; back, black and 

 white. 



American Three-toed W odpecker. 

 Banded-backed Woodpecker. 



Picoides americanus (male). 

 See No. 329. 



Toes, three ; crown, black, marked with white ; back, black and white. 



American Three-toed Woodpecker. 

 Banded=backed Woodpecker. 



Picoides americanus (female}. 

 See No. 329. 



Section 2. The following species have four toes ; no trace 

 of red on crown or nape. 



Ear coverts, black; no 



white on inner web of two 

 middle tail feathers ; mid- 

 dle of back, more or less 

 white, but not heavily 

 banded as in borealis ; 

 lower rump and upper 

 tail coverts, black. 



Hairy Woodpecker. 



Dryobates villosus (female}. 

 See No. 324. 



