20 EGG CHECK LIST OF NORTH AMERICAN BIRDS. 
209, White-throated Sparrow—zoONOTRICHIA ALBICOLLIS. Pale green- 
ish-white, more or less thickly spotted with rusty-brown; four to seven; 
.87 by .68. Nests on the ground, Ee.N A: 
210. Tree Sparrow—sPiIzELLA MONTANA. Light green, flecked with 
minute markings of reddish-brown, distributed with great regularity, but 
so sparsely as to leave the ground distinctly visible; four to five; .85 by 
.65. Nests on the ground or on low bushes and breeds in high Arctic 
regions. N. A. 
211. Chipping Sparrow—spizELLa pomesTIcA. Bluish-green, sparsely 
spotted with purplish and blackish-brown, sometimes in a circle about the 
larger end; four or five; .70 by .54,v. Nests in trees and bushes. _N. A. 
21la. Western Chipping Sparrow —sPizELLA DOMESTICA ARIZONA. 
Eggs in my collection do not seem to differ essentially from those of the 
preceding species. Nesting habits the same. Arizona. 
212. Clay-colored Sparrow—sPIzELLA PALLIDA. Light-green, scantily 
and sharply speckled with sienna and other rich shades of brown, dotting 
chiefly confined to the larger end, with a speck here and there over the 
general surface; three ana four; .62 by .50. Nests in trees, shrubs or in 
tufts of weeds. Upper Missouri and high central plains to the Saskatchewan country. 
213. Brewer's Sparrow—sPIZELLA BREWERI.. Bluish-green, blotched 
in scattered markings of golden-brown, more conspicuous than in those of 
the Chipping Sparrow; four; .70 by .50. Rocky Mountains of U.S. to P. C. 
214. Field Sparrow—spizELLa pusiLta. Whitish clay-color, marked 
more or less fully with blotches of reddish-brown; in some these markings 
are scattered, in others confluent about the larger end; five; .68 by. .42. 
Nests on the ground or in low bushes. EUS 
217. Black Snowbird—yunco. HYEMALIS. Creamy yellowish - white, 
marked with spots of reddish-brown, or pale chocolate, confluent around 
the larger portion of the egg; four or five; .75 by .60. All the species 
of Snowbirds are said to lay similar eggs. Nests on the ground in moun- 
tainous regions. ; E.R 
218. Oregon Snowbird—junco orEGONUS. Greenish- white, marked 
about the larger end with fine dots of reddish-brown; four; .75 by .6o. 
Nesting habits same as those of the preceding species. 
: P. C. of US. to Rocky Mts. 
224. Black-throated Sparrow—AmMPHISPIZA BILINEATA. Pure white, with 
a slight tinge of blue, rounded-oval; .73 by .58. Nests in sage bushes. 
Valley of Rio Grande and Gila, 
