562 NORTH AMERICAN BIRDS. 



3.00 (2.92), tail 2.40-2.70 (2.58), culmcn .40-.4S (.45), tarsua 

 .S0-.90 (.83). Ilab. Rocky Mountain di.strict of United States, 

 west to eastern Oregon, western Nevada, and Arizona. 



733a. P. inornatus griseus Ridgw. Gray Titmouse. 

 b": Tliroat black in adult, dull grayi.^h in j-ouug. 



Adult : Top of head, including crest, black, the crown gray ; a streak 

 behind eye, connecting posteriorly with a vertical bar or crescent 

 behind ear-coverts, collar round hind-neck, and patch covering chin 

 and throat, black; rest of head grayish white; upper parts plain 

 graj'ish, lower parts white mcdiallj-, grayish laterally. Youtig 

 with chin blackish, but throat dull grajMsh, and other markings of 

 head less sharply defined. Length 4.50-5.00, wing 2.60-2.80, tail 

 2.40-2.65. Eggs 5-7, about .66 X .52, plain white. Jlab. High- 

 lands of Mexico, north to western Texas, southern New Mexico, 

 and southern Arizona. 



734. P. woUweberi (Bonap.). Bridled Titmouse, 

 rt'. Head without crest. (Subgenus Pants.) 

 b^. Top of head and throat black. 



c'. A white superciliary stripe ; bill very slender. 



Above gray, the wings without distinct lighter edgings ; beneath 

 gra3'ish white medially, brownish gray lateralh' ; length 5.00- 

 5.75, wing 2.70-3.00, tail 2.40-2.00. Eggs .63 X -48, usually (?) 

 plain white, sometimes slightly spotted with reddish brown. 

 Hab. Mountains of western United States. 



738. P. gambeli Ridow. Mountain Chickadee, 

 c'. No white superciliar}- streak. 



d\ Sides and flunks brownish gray, not very diflferent in color from 

 back. 



Sides of head and median lower parts white ; wings without 

 distinct whitish edgings ; length 4.70-5.20, wing 2.60-2.80 

 (2.64), tail 2.25-2.40 (2.32), tarsus .68-.72 (.70). Hab. High- 

 lands of Mexico, north to southern Arizona. 



737. P. meridionalis Scl. Mexican Chickadee. 

 d'. Sides and flanks whiti.sh bufty, or light brownish, always very 

 different in color from back. 

 t'. Wing .20, or more, longer than tail ; tertials and greater wing- 

 coverts without distinct whitish edgings ; Mack of throat 

 with an abruptly defined posterior border. 



Above uniform gr.ayish ; beneath white medially, light 

 buffy brownish laterally (paler in summer) ; length 

 4.25-4.60, wing 2.40-2.60 (2.47), tail 2.10-2.50 (2.10), « 

 tarsus .55-.65 (.01). Eggs .57 X -45. Ilab. Kastern 

 United States, chiefly south of 40°, west to Missouri, 

 Indian Territory, and eastern Texas. 

 (94.) 730. P. carolinensis Am. Carolina Chickadee. 



