DENDROICA. 507 



broad malar stripe (widening 

 behind), and lower parts, pure 

 white; sides broadly streaked 

 with black ; a yellow spot or 

 streak above lores ; upper parts 

 bluish gray, the back streaked 

 with black. Adult female : Simi- 

 lar to male, but colors duller, 

 and black of throat more or less 

 mixed with white (the latter 

 sometimes prevailing). Young 

 in first autumn : Essentially like 

 adults, but upper parts much 

 tinged with brown, the top of 

 head grayish like back (some- 

 times streaked with black), back 

 with black streaks indistinct or 

 concealed, and throat sometimes 

 entirely white superficially. 

 Young : Above plain dull brown- 

 ish gray ; lower parts plain dull 

 gray anteriorly, white posteri- 

 orly. Length 4.70-5.40, wing 

 2.35-2.65, tail 2.15-2.35. Eggs 

 .61 X -50, white, pinkish white, 

 or creamy white, spotted or 

 speckled, chiefly on or round 

 larger end, with reddish brown 

 and lilac-gray, usually mixed 

 with a few darker specks. Hab. 

 Western United States, in moun- 

 tains, north to Colorado, Oregon, 

 etc. ; south, in winter, into Mex- 

 ico, as far as Oaxaca, Guana- 

 juato, and Orizaba.. 665. D. ni- 

 grescens (Towns.). Black- 

 throated Gray Warbler. 

 /. Sides of head yellow and black or yellow 

 and olive. 

 A'^ Sides broadly streaked with black ; 

 black of chest extending farthest 

 back on sides. 

 l^. Breast white, or merely tinged 

 with yellow ; ear-coverts at 

 least partially yellow, never 



