BLACK-CHINNED SPARROW. 
565. Spizella atrogularis. 5 1 /* inches. 
This is easily identified by the black chin, throat and fore¬ 
head. It is quite common in parts of southern California, 
and south into Arizona and New Mexico. The habits are 
similar to those of the Field Sparrow, their eggs differing 
in being unspotted and are a bluish green (.65 x.50). 
WHITE-WINGED JUNCO. 
566. Junco aikeni. 6% inches. 
This is slightly larger than the common 11 Black and White 
Snowbird” (Hyemalis). It is also a paler bird and the wings 
are crossed by two white bars. It is found in the central 
Rocky Mountain regions, where it breeds in the northern part, 
and winters to eastern Colorado. 
SLATE-COLORED JUNCO. 
567. Junco hyemalis. 6 inches. 
This is common 11 Black and White Snowbird” of the east, 
and is the same as above, but darker and does not have 
any white wing bars. They breed mostly north of the United 
States, nesting on the ground, often under some boulder, mak¬ 
ing their nest of roots and grass in which they lay four green¬ 
ish white eggs, spotted with brown about the larger end (not 
illustrated). 
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