Appendix. 



white with dusky streaks bordering it; 

 under parts bufFy. 



Rufous-crowned Sparrow . 130 



Upper parts of body solid brown; lower 



parts spotted, streaked or barred. Wings 



and tail with or without bars. 



a. Bill stout; back dark brown; breast 



white, heavily marked with triangular 



brown spots. 



Townsend's Sparrow Group 133 



h. Bill slender; feet long and slender; back 

 olive-brown; breast white or bufFy, 

 spotted with brown. 

 a'. Upper tail-coverts and tail resembling 

 the back. 



Russet-backed Thrush , 199 



b'. Upper tail-coverts and tail rufous in 

 contrast to back. 



Dwarf-hermit Thrush . 200 

 ^■. Bill slender; feet long and slender, but 

 scaled, unlike a thrush's. Back grayish 

 brown; breast dull whitish profusely 

 spotted with triangular brown markings. 

 Tail tipped with white. 



Sage Thrasher . . 173 



d. Bill slender; tail held erect; wings 

 and tail barred; size small. 

 a'. Length 5 inches; tail long; belly 

 faintly barred with dusky. 



Parkman's Wren . . 181 



i'. Length 4 inches; tail short; belly 

 heavily barred with dusky. 



Western Winter Wren . 182 



261 



