KEY TO SPARROWS 249 



1'. Crown not conspicuously striped. 

 3. Crown mainly reddish brown or chestnut. 

 4. Corners of tail conspicuously marked with white ; 

 breast unstreaked, but with small black spot in cen- 

 tre ; cheeks chestnut. A large, handsome Sparrow 

 of Mississippi valley region, p. 237. LARK FINCH. 



4'. Corners of tail not white. 

 5. A conspicuous reddish brown patch on wing. 



Forehead black ; breast grayish, without marking ; 

 throat white . '.* . . p. 229. SWAMP SPARROW. 



5'. No reddish brown patch on wing. 

 6. Forehead black anteriorly ; white wing 

 bars not conspicuous ; bill black. Common 

 doorstep Sparrow . p. 113. CHIPPING SPARROW. 



6'. Forehead without black; white wing bars conspicu- 

 ous. 



7. Breast with indistinct black spot ; upper half of 

 bill black, lower half yellow. Common winter 

 visitant p. 227. TREE SPARROW. 



7'. Breast without spot ; entire bill reddish brown. 

 Song, a minor whistle, p. 183. FIELD SPARROW. 



3'. Crown not mainly reddish brown or chestnut. 

 8. Under parts not streaked. 



. 9. Outer tail feathers white ; back and breast slate- 

 gray ; belly abruptly white. Common in flocks 

 in winter p. 221. JUNCO. 



9'. Outer tail feathers not white. 



10. Upper parts reddish brown ; breast and sides 

 brownish, unstreaked. Found in Mississippi 

 valley and the south. 



p. 242. BACHMAN'S SPARROW. 



