PASSERES— SAXICOLIDAE— SIALIA AROTICA. 



163 



Soc. Nat. Hist., June, 1S74, 19.— Be, Brew., & Eidg., N. A. Birds, i, 

 1S74, 07, pi. v, f. 2.— Goues, U. S. Geol. Surv. Terr., 1874, 14. 



A common inhabitant of the mountainous regions of the central dis- 

 trict, and very numerous in Utah, Colorado, and in Northern New Mexico 

 and Arizona. It seems to be of a less confiding disposition than the pre- 

 vious species ; and I have usually found it during the breeding season in the 

 wild, elevated districts, from 7,000 feet upward, where it frequents the 

 more open spaces, where aspen groves alternate with the remains of pine 

 woods, the broken stubs of which, charred by the fires which have swept 

 through again and again, are seen on every side. In the cavities of these 

 stubs, and the deserted woodpeckers' holes in the aspens, they breed during 

 the early summer months. In the neighborhood of Santa Fe', they breed 

 commonly, and here were noticed in the vicinity of houses, seeming in 

 fact to be as familiar and as much at home as does our own bluebird in the 

 East. Two broods are reared in a season. They do not apparently get 

 much farther south in summer than Santa F4, but in the late fall and winter 

 are spread over the greater portion of both New Mexico and Arizona. In 

 Utah, they were first noticed as migrating south in small flocks in early 

 August. From this time until November 15, they were usually seen in 

 small detached companies, pursuing their way southward. 



No. 



Sex. 



Locality. 



Date. Collector. 



Wing 



Tail. 



Bill. | Tarsus. 



150 



151 



265 



3S7 



'43 

 169 

 2 So 

 326 



33° 



35<5 



47 



99S 



1006 



10 



14 



iS 

 21 



3 ad. 

 9 ad. 

 3 ad. 



9 



9 ad. 

 3 ad. 

 9 ad. 

 3 ad. 

 3 ad. 

 1 ad. 

 3 ad. 

 3 ad. 

 3 ad. 

 3 ad. 

 3 ad. 

 3 ad. 

 9 ad. 



Gunnison, Utah 



do 



Sept. S, 1S72 

 do 



II. W. Henshaw 











do 











Iron City, Utah 



Beaver, Utah 



Oct. 8, 1S72 

 Nov. io, 1872 



May 26, 1S73 

 May 28, 1873 

 June 6, 1S73 

 June 12, 1S73 

 do 



...... do 











Dr. H. C. Yarrow and 



H. W. Henshaw. 

 II. \V. Henshaw 

 do 











Fort Garland, Colo .... 

 do 



4-3° 

 4.50 



4-36 

 4.50 

 4.65 

 4-63 



4-35 

 4.58 



4-75 

 4-43 

 4.4S 



4-45 



4- 4- 



2.S7 



2. ss 



2. 76 

 2. 92 

 3.02 

 2. 90 

 2. 91 

 3- °3 



2.27 



2-93 

 2.9S 



2-75 

 > 88 



0.S3 



0-57 

 0.55 

 0. 56 



°-57 

 0.57 

 0.61 

 0. 50 

 0.50 

 0.55 

 0.45 

 0.55 

 o-55 



0.S1 

 0. S4 

 0. So 

 0. So 

 0. S6 

 0. 82 

 0.S5 

 0.S5 



°-93 

 0. Si 

 0. Si 

 0. SS 

 0. S5 



do 



do 



Rio Grande, Colo 



do 



do 



do 



do 



June 15, 1S73 

 June 25, 1S73 

 Nov. 19, 1S73 

 do 



do 



South Park, Colo 



Salt Lake, N. Mex.... 

 do 



do 



do 



do 



Santa Fe, N. Mex 



. . do 



June 17, 1S74 

 June iS, 1S74 

 June 19, 1874 

 June 20, 1S74 



Dr. J. T. Rothrock.... 



II. YV. Henshaw 



Dr. J. T. Rothrock 



do 



do 



do 







