BIRDS OF NORTH AND MIDDLE AMERICA. 331 



g. Paler; median crown-gtripe (white or ashy) broader; streaks on back 

 chestnut or chestnut-brown on a hght grayish ground; edge of wing 

 white. (Western United States except Pacific coast district, breed- 

 ing in Alaska.) Zonotricliia leucophrys gambelii, adult (p. 339) 



gg. Darker; median crown-stripe narrower; streaks on back sooty brown 

 or blackish on an olivaceous ground color; edge of wing yellow. 

 (Pacific coast district, California to British Columbia.) 



Zonotrichia leucophrys nattalli, adult (p. 342) 

 ee. Lateral crown-stripes chestnut. {Zoiiotrirhid lenrnjiJirii.t, immature.) 

 /. Lores partly brown or dusky 



Zonotricliia leucophrys leucophrys, immature. 

 ff. Lores wholly light colored (pale ashy or dull light buffy). 



g. Paler; median crown-stripe (light cinnamon or dull buffy) broader; 

 streaks on back chestnut or chestnut-brown on a paler and grayer 

 ground color; edge of wing white. 



Zonotrichia leucophrys gambelii, immature. 



gg. Darker; median crown-stripe narrower; streaks on back sooty brown 



or blackish on a darker and more olivaceous ground color; edge of 



wing yellow Zonotrichia leucophrys nuttalli, immature. 



dd. Supraloral region yellow or yellowish; ground color of l)ack rusty brown. 

 (Eastern North America, breeding northward; accidental westward.) 



Zonotrichia albicoUis (p. 343) 

 aa. Chest streaked with dusky. ( Young. ) 



h. Lateral stripes of pileum grayish brown or olive, distinctly streaked with l^lack- 

 ish; ground color of back pale buffy, or pale buffy olive. 

 c. Ground color of back pale dull buffy; under parts white or nearly so. 

 d. Lores brownish down to anterior angle of eye. 



Zonotrichia leucophrys leucophrys, young. 



dd. Lores wholly pale grayish Zonotrichia leucophrys gambelii, young. 



cc. Ground color of back light buffy olive; under i»arts pale yellowish. 



Zonotrichia leucophrys nuttalli, young. 



hh. Lateral stripes of pileum warm sepia, vandyke brown, or chestnut-brown, not 



distinctly, if at all, streaked with dusky; ground color of back rusty brown. 



Zonotrichia albicollis, young.' 



ZONOTRICHIA QUERULA iNuttall). 

 HARRIS'S SPARROW. 



Pileum black, without trace of median stripe; sides and flanks 

 light butfy brownish, more or less streaked with darker; no gray on 

 chest, etc. 



Adults {sexes alike). — Pileum, malar region, chin, and throat uniform 

 black, this more or less extended over median portion of chest in the 

 form of a broad streaking or spotting: lores and suborbital region 

 mixed blackish and gra\'ish or gra3ish bufiy; sides of head (including 

 supra-auricular region) dull brownish bufly, becoming more grayish on 

 sides of neck and nearly white next to the black throat-patch, relieved 

 by an irregular l)lackish or dark brownish spot just back of upper pos- 

 terior portion of auricular region; hindneck more or less brownish, 



' The young of Z. querula and Z. coronata not seen. 



