JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 165 



Rump and upper tail coverts, pure white ; greater portion of tertials 

 and secondaries, white; the shafts, black; inner webs of two middle 

 tail feathers, not marked with white. Adult birds of both sexes 

 have the head red; immature birds have the head dark brownish 

 gray. Melanerpes erythrocephalus (immature}. 



Red -headed Woodpecker. 

 See No. 195. 



Inner webs of two middle tail feathers, heavily marked with white ; 



belly, usually tinged with pale yellow. 



Sphyrapicus varius (immature}. 

 Yellow-bellied Woodpecker. 

 See No. 193. 



SECTION 3. The following species have four toes, and more or less 

 red on crown or nape : 



Crown, black; a patch of red on the occiput (back of the head) ; 

 ear coverts, black ; no white on inner webs of two middle tail feathers ; 

 back, black, with white patch in middle, but not heavily banded with 

 black and white; wings, with round white spots; upper tail coverts, 

 black. Dryobates villosus (male}. 



Hairy Woodpecker. 

 See No. 189. 



Crown, red; throat, red (male); crown, red; throat, white (fe- 

 male); belly, tinged with yellow; two middle tail feathers, heavily 

 marked with white on the inner webs ; a patch of black on the breast, 

 varying in size, according to age and season. 



Sphyrapicus varius (adult}. 

 Yellow-bellied Woodpecker. 

 See No. 193. 



