72 Lincoln, Birds of the Clear Creek District, Colo. [j an . 



Spizella p. arizonse. Western Chipping Sparrow. — Common 

 summer resident. Very abundant in late summer just previous to migra- 

 tion. The dates of arrival and departure of S. m. ochracea and S. p. 

 arizonoe frequently meet or overlap slightly. 



Spizella pallida. Clay-colored Sparrow. — Not common or rare. 

 Only seen during the fall migration. 



Spizella breweri. Brewer's Sparrow. — Not an uncommon fall 

 migrant and I have one taken May 29, 1909. 



Junco aikeni. White-winged Junco. — Winter resident; not un- 

 common. More numerous in the lower gulches of the foothills. 



Junco h. hyemalis. Slate-colored Junco. — Not an uncommon 

 visitor and perhaps a resident during the winter months. I secured one 

 April 2, 1911, and found it common during April, 1912, near Golden. I 

 think it probable that many examples of this form are mistaken for aikeni 

 or connectens and so overlooked. 



Junco h. connectens. Shtjfeldt's Junco. — Whiter resident; plenti- 

 ful. Generally associated with mearnsi or Spizella m. ochracea. 



Junco h. montanus. Montana Junco. — Winter resident. Always 

 found in the same flocks and so closely resembling mearnsi or connectens, 

 many examples of montanus escape detection, but I believe they may be 

 ranked as common. Good, though small, series have been secured. 

 Apparently more numerous from January to the middle of April. 



Junco h. mearnsi. Pink-sided Junco. — With Spizella m. ochracea, 

 the most abundant winter resident. A few will frequently arrive by the 

 middle of September and May is often advanced before the last has gone 

 north. 



Junco p. caniceps. Gray-headed Junco. — Common migrant and 

 rare winter resident. Nests in the foothills above Golden. (See Rockwell 

 and Wetmore, ' Birds of Golden, etc.') 



Melospiza m. montana. Mountain Song Sparrow. — Resident; 

 plentiful. 



Melospiza 1. lincolni. Lincoln's Sparrow. — Migrant; not common. 

 Either a late fall and early spring migrant or else a few remain through the 

 winter as I have taken it in October and March. 



Passerella i. iliaca. Fox Sparrow. — The only record for Colorado 

 is the specimen from this district taken November 1, 1916 (Auk, Vol. 

 XXXV, 1918, p. 236). The bird was secured from a willow thicket in a 

 swamp below the south bluffs of the valley, and is an adult male in typical 

 plumage. 



Pipilo m. arcticus. Arctic Towhee. — 



Pipilo m. montanus. Spurred Towhee.— Colorado is in the 

 territory where these two geographic races overlap and their status is not 

 very clearly defined. Except with examples absolutely typical, visual 

 identification is impossible, but in a series submitted to the Biological 

 Survey for determination both forms were found in numbers, a slight 



