264 



North American Birds Eggs- 



57 0. Arizona Junco. Junco phseonotus yxdliatus. 



Range. — Mountains oJ western Mexico north to southern Arizona. 



Similar to the preceding species but upper mandible blackish and the gray on 

 throat shading insensibly into the grayish white underparts. They are quite 

 abundant in the higher ranges of southern Arizona, where they breed, placing 

 their nests on the ground in similar locations to those chosen by other Juncos; 

 the three or four eggs are greenish white, finely speckled chieHy about the large 

 end with reddish brown. Size .76 x .60. 

 570a. Red-backed Junco. Junco phmonotusdorsalis. 



Range. — Breeds in the mountains of New Mexico and Arizona and southward. 

 This variety is like the last but the reddish brown on the back does not extend 

 to the coverts or wings. The nesting habits are like those of the last but the 

 eggs are only minutely specked about the large end. 

 57 1, Baird Junco. Junco bairdi. 



Range. — Southern Lower California. 



This gray headed species with rusty back and sides is locally confined to the 

 southern parts of the California peninsula where it is resident. Its eggs are 

 not likely to differ from those of the Pink-sided Junco which it most nearly re- 

 sembles. 

 571.1. Townsend Junco. Junco tounscndi. 



Range.— Mountains of northern Lower California; resident and breeding. 

 Similar to the Pink-sided Junco but duller colored; eggs probablj' the same. 



572. Quadalupe Junco. Junco iiifiuhirw. 

 Range. — Guadalupe Island off Lower California. 



Resembles the Pink-sided Junco but is smaller, darker and duller colored. 



They are common on the island where they nest in the pine groves, laying their 



hist sets in February or March. The nests are like those of the genus and the 



eggs are greenish white, finely dotted with reddish brown at the large end. Size 



77 X .60. 



573. Black-throated Sparrow. Ainphispiza bilineaia. 



Range. — Breeds from central Texas to Kansas; winters in southern Texas and 

 Mexico. 



This species is grayish brown above, with black throat, white 

 superciliary and line on side of throat. This is a common 

 species that nests on the ground or at low elevations in bushes, 

 making their nests of weed stems and grasses. The three to five 

 eggs are bluish white, unmarked and similar to those of the Blue- 



bird but smaller. Size .72 x .55. 



[Bluish white.] 



573a. Desert Sparrow. Amphispizii bilineatci deserticoki. 



Range. — Southwestern United States from western Texas to southern Califor- 

 nia, and north to Colorado and Nevada; winters in Mexico. 



Like the last but paler above. An abundant bird among tlie foothills and on 

 plains throughout its range. Found generally in sage brush and thickets 

 where it nests in bushes or on the ground laying three or four bluish white eggs 

 like those of the last. 

 5 74. Bell Sparrow. Amphwpiza beUi. 



Range. — Southern half of California and southward. 

 These grayish, black and white birds are abundant in sage 

 brush and thickets, nesting on the ground or at low elevations 

 in bushes, and during May or June^ laying from three to four 

 eggs of a pale greenish white color, spotted and blotched with 

 reddish brown and purplish. Size .75 x 60. Data.— Coronado 

 Beach, San Diego, Cal., May 21, 1887. Nest of grasses in a 

 [Ureenishwhite.l clump of bushes, one foot from the ground. Collector, A. M. 

 Ingersoll. 



