PASSERES— FR1NG1LL1DAE— JUNCO OREGON US. 267 



indiscriminately in large flocks, in El Paso County, Colorado, the middle of 

 December. Mr. Aiken has had abundant opportunity to note the time and 

 manner of its migrations, and from these it seems pretty certain that it finds 

 its summer home very far to the northward. According to Mr. Aiken, the 

 first stragglers from the north do not make their appearance till about the 

 5th of October, and then in gradually increasing numbers till the 1st of 

 December, when they come in large flocks, the last to arrive being the old 

 and fully plumaged males. While many of the females and young birds 

 proceed farther to the south, the greater number of the adult males winter 

 at some point farther to the north than El Paso County, as of the whole 

 number seen during the winter only about two-fifths are males. Early in 

 February, the old birds begin to start northward; the general migration being 

 delayed about a month. The habits of this race do not differ from those of 

 its congeners. 



J UNCO OREGONUS (Towns). 

 Oregon Snowbnrd. 



Fringilla orcgona, Towns., Jour. Acad. Nat. Sci. Phila,, vii, 1837, 188. 



Niphaca oregona, Bn., Stans. Rep. Exp. Great Salt Lake, 1852, 310. 



Struihus oregonus, Woodh., Sitgreave's Exp. Zuni & Col. Biv., 1854, 83. — Newp.., P. 

 E. E. Rep., vi, 1857, 80. 



Junco oregonus, P.D., Ives' Col. Exped., 1857-58, pt. iv, 6.— Id., Birds N. A., 1858, 466.— 

 Heerm., P. E. R. Rep., x, pt. iv, 1859, 47.— Kennerly, P. R. E. Eep., 

 Whipple's Eoute, 1859, 28.— Xantus, Proc. Acad. Nat. Sci. Phila., 1859, 192 

 (Fort Tejou, Cal.).— Henry, Proc. Acad. Nat. Sci. Phila., 1859, 107 (New- 

 Mexico).— Coop. & Suckl., P. R. R. Rep., xii, pt, ii, 18G0, 202.— Uayd., 

 Traus. Am. Phil. Soc, xii, 18G2, 166.— Codes, Proc. Acad. Nat. Sci. Phila., 

 1S66, S5 (Fort Whipple, Ariz.).— Snow, Birds Kan., 1872, 10.— Cooper, 

 Birds Cal., i, 1870, 199.— STEV., U. S. Geol. Surv. Terr., 1870, 464.— Coues, 

 Key N. A. Birds, 1872, 141. — Holden & Aiken, Proc. Bost. Soc. Nat, Hist., 

 1872, 200.— Bd., Brew., & Ridg., N. A. Birds, i, 1874, 584, pi. xxvi, f. 2.— 

 Henshaw, An. Lye. Nat. Hist. N. Y., xi, 1S74, 6.— /(?., An. List Birds Utah, 

 1S72, Wheeler's Exped., 1874, 44.— Id., Rep. Orn. Specs., 1873, Wheeler's 

 Exped., 1874, 114.— Coues U. S. Geol. Surv. Terr., 1874, 142. 



Met with in large flocks in Southern Utah about the middle of October; 

 also common at Provo in December. 



Like its congener, the snowbird of the extreme east, whose habits 

 appear to be the exact counterpart of its own, there takes place at the close 



