THE BIRD BOOK 



Rock Wren 



713a. Bryant's Cactus Wren. Heleodytes 

 brunneicapillus bryanti. 



Range. — Northern Lower California and 

 coast of southern California. 



The nesting habits of this variety differ in 

 no respect from those of the last. 



713b. San Lucas Cactus Wren. Ileleo- 

 dytes brunneicapillus affinis. 

 Range. — Southern Lower California. 

 Eggs indistinguishable from those of the last. 



715. 



Rock AVren. 

 obsoletus. 



Salpinctes obsoletus 



Range. — United States, west of the plains, 

 breeding north to British Columbia, and south 

 to Mexico; winters in south- 

 western United States and south- 

 ward. 



This species appears to be 

 quite abundant on rocky hill- 

 sides throughout its range; like 

 most of the Wrens they draw \y 

 attention to themselves by their loud and va- 

 ried song. They nest in crevices or beneath overhanging rocks, making the 

 nest out of any trash that may be handy, such as weeds, grass, wool, bark, root- 

 lets, etc.; their eggs range from four to eight in number and are pure white, 

 linely specked with reddish brown. Size .72 x .50. 



716'. Guadalupe Rock Wren. Salpinctes guadeloupensis. 



Range. — Guadalupe Island, Lower California. 



A similar but darker and browner species than the Rock Wren. It breeds in 

 abundance throughout the island from which it takes its name, placing its 

 nests in crevices among the boulders or cavities of fallen tree trunks and, as is 

 often done by the last species, lining the pathway to the nest with small 

 pebbles. The eggs, which are laid from January to April, resemble, in all 

 respects, those of the common Rock Wren. 



717- White-throated Wren. Catherpes mexicanus albifrons. 



Range. — Northeastern Mexico and the Lower Rio Grande Valley in Texas. 



The habits of the White-throated Wren are the same as those of the Canon 

 Wren, which variety is more common and better known; the eggs of this 

 species are not distinguishable from those of the next. 



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