186 PASSERES : Perching Birds 



BLACK-CHINNED SPARROW 



(565. Spizella atrogularis) 5| in. 



Male: Chin and front of face black; head, neck, and under parts 

 slaty gray, lighter on belly; back rusty, finely black-lined. 



Female: Like male, except that the black face-markings are ob- 

 scure or wanting. 



Rather a shy, secretive bird that often escapes notice by 

 running instead of by flight. 



THURBER JUNCO 



(567c. Junco oreganus thurberi) 6 in. 



Male: Head and neck clean black; back light brown; breast 

 and belly white. 



Female: Head and neck gray; back lighter; sides washed with 

 buffy. 



Immature: Streaked dark gray and whitish. 



The sharp contrast of black head and white breast, and the 

 white-margined tail are distinctive. 



All the Juncos have outer tail-feathers mostly white, a mark 

 conspicuously shown in the characteristic jerky flight of these 

 birds and serving to identify the genus at long range. The 

 Rocky Mountain forms of Junco occurring in Arizona are easily 

 distinguished in the field if proper attention is given to their 

 various ranges and color of bills. 



SLATE-COLORED JUNCO See Appendix. 



(567. Junco hyemalis hyemalis) 6| in. 



PINK-SIDED JUNCO 



(567g. Junco hyemalis mearnsi) 6 in. 



Male: Pale slaty gray, lores blackish; back brown; sides 

 extensively pink. 



Female: More brownish above, extending to crown; less pink 

 below. 



Bill wholly dull whitish. 



