516 NORTH AMERICAN BIRDS. 



cline to whitish. Young: Above 

 dull brownish gray, the wing-cov- 

 erts tipped with light buffy ; chin and 

 throat whitish; rest of lower parts 

 yellowish white, the chest and sides 

 streaked with color of back, this 

 nearly uniform on chest. Length 

 4.25-5.00, wing 2.10-2.30, tail 1.90- 

 2.10. Nest in bushes or small trees 

 (often in young cedars) in open 

 situations. Eggs .63 X -47, white or 

 buffy white, speckled, chiefly on ot 

 round larger end (often wreathed), 

 with burnt-umber or vandyke-brown 

 and lilac-gray. Sab. Eastern United 

 States, north to Michigan and south- 

 ern New England ; in winter, southern 

 Florida, Bahamas, and most of Wost 

 Indies... 673. D. discolor (Vieill.). 

 Prairie Warbler. 

 i'. Above olive-brown, passing into olive-green 

 on rump and upper tail-coverts, tho back 

 narrowly streaked with darker; top of 

 head chestnut in adults ; tips of wing- 

 coverts paler than general color, but not 

 forming obvious bands ; a continuous 

 superciliary stripe of yellow or dull 

 whitish ; inner web of outer tail-feather 

 with less than terminal third white, this 

 with anterior outline only moderately 

 oblique (often nearly transverse). (Win- 

 ter adults with chestnut of crown ob- 

 scured or even sometimes concealed by 

 brownish tips to feathers ; immature 

 birds with chestnut wanting, the crown 

 dull grayish brown or olive-brown, 

 streaked with dusky.) 

 f. Smaller and much duller colored, with 

 bright or continuous yellow of lower 

 parts confined to throat, chest, and 

 under tail-coverts in adult, to the 

 latter alone in immature birds ; mid- 

 dle portion of lower parts (belly, 

 etc.) mixed yellow and dull whitish, 

 the latter usually prevailing ; imma- 



