438 AMEKICAN WARBLERS. 



N. E.; winters, chiefly in U.S.; south in 

 Aug., north in April. Song, a guttural 

 trill. Occurs in low woodlands. 



499. CHESTNUT-SIDED WARBLER. 



Larger, 5, white beneath, broadly 

 streaked with chestnut on sides; crown, 

 yellow; green above; patch on side of head 



. 347 



Chestnut-sided Warbler. 1-3. 



and streaks on back, black, fig. 347 and 348 

 upper fig. Female, duller; young, without 

 chestnut on sides, but in adult and young 

 the wing -bands are always pale -green. 

 Breeds throughout N. E., N. Y., and Penn., 

 north to Ontario, less commonly west to Ind. 

 and 111. ; winters from Guatemala to Panama, 

 south in Aug. and Sept., north in May. Fre- 



