232 PASSERES : Perching Bird 



ROCK WREN 



(715. Salpinctes obsoletus obsoletus) 6 in. 



Light gray, whitish below; tail buffy-tippetf and black-banded, 

 side feathers barred black and buffy (seen in flight). In the 

 hand, back is finely speckled black and whitish; throat and 

 breast faintly dusky-streaked ; closed tail narrowly barred above 

 with dusky and brownish. Has the " bobbing" habit. 



SAN NICOLAS ROCK WREN 



(715a. Salpinctes obsoletus pulverius) 6 in. 

 A subspecies of the Rock Wren, differing from it only in 

 ochraceous or " dusty" cast of plumage. 



DOTTED CANYON WREN 



(717b. Catherpes mexicanus punctulatus) 5f in. 



Silky white throat and fore-breast; otherwise brown; sides and 

 belly rich rusty brown; upper parts finely speckled dusky and 

 white; tail rusty, with narrow black bars. Bill long and slender, 

 adapted to probing crevices for food. 



Song: Loud, ringing, whistled notes on descending scale. Call 

 note: A loud trill, heard above brawl of stream. 



CANYON WREN 



(717a. Catherpes mexicanus conspersus) 5f in. 

 Differs from the Dotted form in less spotting on upper parts, 

 a difference naturally imperceptible in the field. 



SAN DIEGO WREN 



(719d. Thyromanes bewicki charienturus) 5| in. 

 Plain brown above; a white superciliary, and white under parts 

 changing to gray on belly; cheek gray; tail inconspicuously 

 barred. The white line above eye, with unmarked back, is dis- 

 tinctive. 



BAIRD WREN 



(719b. Thryomanes bewicki bairdi) 5| in. 

 Similar to the San Diego, but grayer above, whiter below. 

 Known also as Desert Wren, from its habitat. 



