SPIZELLA. A21 
Upper parts more buffy or “clay-colored,” with blackish 
streaks broader and less sharply defined; dusky postocular 
and rictal streaks less distinct (sometimes nearly obsolete) ; 
chest, sides, and flanks streaked with dusky. Length 
about 5.00-5.75, wing 2.20-2.50 (2.39), tail 2.30-2.60 (2.44). 
Nest in bushes in open situations. Hygs 3-6, .66 x .49, 
light greenish blue, speckled, chiefly on larger end, with 
brown. Hab. Great Plains, north to the Saskatchewan, 
west to base of Rocky Mountains, east, irregularly, to Wis- 
consin and northern Illinois, south to Texas and New 
Mexico (in winter, to Lower California and over table- 
lands of Mexico to Guanajuato). 
561. S. pallida (Swains.). Clay-colored Sparrow. 
é’. Head not distinctly striped, and ear-coverts not distinctly 
brownish. Adult: Top of head, hind-neck, back, and 
scapulars light grayish brown, streaked with blackish; 
sides of head nearly uniform light grayish brown, but 
ear-coverts perceptibly (not conspicuously or abruptly) 
browner, usually without distinct dusky streak along 
upper or lower margins; top of head without distinct me- 
dian stripe (usually with merely a trace of such stripe). 
Cin winter, not essentially different, but general cast of 
plumage perceptibly browner than in summer.) Young: 
Essentially like adult, but chest and sides streaked with 
dusky, and streaks on upper parts less sharply defined. 
Length 5.00-5.60, wing 2.35-2.55 (2.45), tail 2.35-2.70 
(2.51). Mest and eggs like those of S. pallida, but the latter 
usually more distinctly marked, averaging about .68 x .49. 
Hab. Western United States, east to (and including) Rocky 
Mountains, south (in winter only ?) to northwestern Mexico. 
562. S. breweri Cass. Brewer's Sparrow. 
a. Head and neck plain grayish ; chin and upper throat black in adult. 
Adult: Head, neck, and lower parts plain ash-gray, changing to white on 
belly and lower tail-coverts; chin and upper throat black; back and 
scapulars rusty brownish, narrowly streaked with black. Young: Simi- 
lar to adult, but black of chin and throat replaced by the general gray 
color. Length about 5.50-5.75, wing 2.40-2.50, tail 2.70-2.90. est in 
bushes. Eggs 3-5, .68 x .50, plain light greenish blue. Hab. Mexico, 
north to southern border of United States Gower Rio Grande to 
southern California); Lower California. 
565. S. atrigularis (Caz.). Black-chinned Sparrow. 
