BIRDS OF NORTH AND MIDDLE AMERICA. 325 



buffy whitish) on terminal margins: tertials dusky, broadly edged on 

 outer web with broAvnish buti'y or light Isabella color, paler on inner- 

 most feathers: primaries gi-ayish dusky, narrowly edged with very 

 pale butfy grayish; auricular region light l)utfv In-own or pale wood 

 brown, margined above by a distinct postocular streak of dusky brown 

 and ))elow by a supramalar streak of the same; malar region dull white 

 or buffy whitish, margined below by a more or less distinct dusky or 

 brownish streak along each side of throat; under parts dull whitish, 

 tinged pale grayish buffy on chest, sides, and flanks; maxilla brown with 

 dusky tip; mandible paler brown; legs and feet very pale brownish. 



Arhilfs !n ?r/;^ A/'. —Similar to the summer plumage, but black streaks 

 on crown narrower, never ( i) exceeding the browti ones in width, and 

 plumage more tinged with buffy. 



hniiKiiiire {young ',n frd ?/'/???'rr,^).— Decidedly more buffy than 

 adults, the back and scapulars with the ground color nearly tlie same 

 light wood brown or Isabella color as the pileum, the latter with the 

 paler median stripe indistinct and buffy instead of grayish, and the 

 black streaks narrower; chest decidedly buffy. 



J'^v?/;?//.— Essentially like the immature plumage described above, 

 but chest streaked with blackish, the ground color of back, etc., more 

 buffy, and the larger wing-coverts and tertials broadlv martrined with 

 buff-. 



Adult male.— \^^wgW\ (skins), 117.86-137.41 (12B.75); wing, 59.44- 

 63.25 (61.21); tail, 55.37-61.98 (58.42); exposed culmen, 8.64-9.91 

 (9.40); depth of bill at base (three specimens),. 5. 33-5. 84 (5.59); tarsus, 

 17.53-18.03 (17.78); middle toe, 12.19-13.21 (12.45).' 



Adult ,^///rtA.— Length (skins), 117.86-133.35(125.73); wing, 57.91- 

 63.75 (60.45); tail, 52.83-60.96 (57.40); exposed culmen, 8.89-9.91 

 (9.40); depth of bill at base, 5.08-5.59 (5.33); tarsus. 16.76-18.03(17.63); 

 middle toe, 11.68-12.70(12.19).' 



Great plains of North America, from eastern base of Bocky Moun- 

 tains to prairie districts of the upper Mississippi Valley; breeding 

 from eastern Colorado,' Nebraska, Iowa, and northwestern Illinois 

 northward to the plains of the Saskatchewan (to Fort Rae?); south- 

 ward in winter thi'ough Kansas, Texas, southern New ^Mexico, and 

 Arizona to Cape St. Lucas, Lower California, and over Mexican 

 plateau to States of Chihuahua, Guanajuato, Puebla (Chalchicomula), 

 and Oaxaca (Huajuapan); casual or occasional during migration in 

 western Indiana (Terre Haute), Michigan (Washtenaw County), and 

 Ontario (London). 



^ Eight specimens. 



'^ Lieut. C. A. H. McCaule}' records ''5/j/2g^/«;>offida6mtrn'' as breeding in various 

 localities in northern Texas (Red River Canon, Palo Duro, and Red River Valley), 

 but this may be an error; certainly the species was not S. hreveri if obtained during 

 the breeding season. {See Bulletin, U. S. Geological and Geographical Survey o1 

 the Territories, iii, 1877, 664. ) 



