500 NORTH AMERICAN BIRDS. 



ter bordered on each side by a 

 broad stripe of rich chestnut ex- 

 tending continuously from sides 

 of neck to flanks ; lores and a tri- 

 angular patch on cheeks (touch- 

 ing the chestnut stripe) black ; 

 back striped with black and 

 light olive-grayish, more or less 

 mixed with light olive-yellowish. 

 Adult female : Similar to male, 

 but duller, the upper parts more 

 decidedly olive-green (even on 

 crown), the black markings on 

 head indistinct, and chestnut on 

 sides more restricted. Young in 

 first autumn : Above bright olive- 

 green, the wing-bands strongly 

 tinged with sulphur-j^ellow; 

 sides of head and thence back- 

 ward to flanks plain ash-gray; 

 an orbital ring and median lower 

 parts white. Length 4.60-5.25, 

 wing 2.40-2.65, tail 1.95-2.10. 

 Nest in small trees or under- 

 growth in edge of woods, often 

 near cultivated fields. Eggs .65 

 X -49, white, or creamy white, 

 speckled, chiefly on or round 

 larger end, with rusty brown, 

 madder-brown, and lilac-gray, 

 occasionally mixed with a few 

 smaller black markings. Sab. 

 Eastern United States and Can- 

 ada, breeding north of 40°, excejst 

 in higher mountains ; in winter, 

 south to Bahamas, eastern Mex- 

 ico, and Central America, as far 

 as Panama.... 659. D. pennsyl- 

 vanica (Linn.). Chestnut- 

 sided Warbler. 

 f. Wing more than 2.75. 



A^ Under tail-coverts pale buff ; upper 

 tail-coverts and edges of quills 

 bluish gray. Adult male: Top 

 of head chestnut, bordered an- 



