DENDROICA. • 501 



teriorly and laterally with black ; 

 sides of head dull blackish ; sides 

 of neck buff; chin, throat, and 

 sides deep cinnamon or chest- 

 nut ; rest of lower parts light 

 buff; back streaked with black 

 and grayish. Adult female : 

 Above olive, streaked with black 

 (crown sometimes tinged or 

 streaked with chestnut) ; beneath 

 buffy, the sides (especially of 

 breast) more or less tinged with 

 rusty, the throat also sometimes 

 tinged with same. Young male 

 in first autumn: Above olive- 

 green, streaked, especially on 

 l3ack, with black ; rump and 

 upper tail-coverts grayish, simi- 

 larly streaked ; lower parts pale 

 buffy, tinged with olive laterally, 

 the flanks strongly tinged with 

 rusty or pale chestnut. Young 

 female in first autumn: Similar to 

 male, but plain olive-green above 

 (the back sometimes indistinctly 

 streaked), and flanks usually 

 without distinct rusty tinge. 

 Length 5.00-6.00, wing 2.75-3.00, 

 tail 2.15-2.25. West in hemlock 

 or other coniferous trees, 15-20 

 feet from ground. Eggs .71 X 

 .51, white, finely speckled on or 

 round larger end with brown. 

 Sab. Eastern North America, 

 breeding from northern New 

 England and northern Michigan 

 to Hudson's Bay ; in winter, 

 south through eastern Mexico 

 and Central America to Colom- 

 bia.. 660. D. castanea (Wils.). 

 Bay-breasted Warbler. 

 A'. Under tail-coverts pure white ; up- 

 per tail-coverts and edges of 

 quills olive or olive-green. Adult 

 male : Top of head uniform glossy 



