BIRDS OP COLORADO. 
215 
Page 103. 559a. Spizella monticola ochracea. Western 
Tree Sparrow. 
Occurs at Breckenridge in migration. 
Page 103. 560a. Spizella socialis arizonae. Western 
Chipping Sparrow. 
Breeds at Breckenridge. 
Page 104. Add. [563a. Spizella pusilla arenacea. Western Field 
Sparrow. 
“Great Plains, from Texas to Montana and Dakota.”^—(A. O. U.) A 
common summer resident of Kansas and Nebraska. Undoubtedly occurs on 
the plains of extreme eastern Colorado, but has not yet been reported.] 
Page 104. 566. Junco aikeni. White-winged Junco. 
Page 105. 567b. Junco hyemalis connectens. Shufeldt’s 
Junco. 
Both taken at Breckenridge in migration. 
Page 105. Add. 567.1. junco montan us. Montana Junco. 
This new form was recently described by Mr. Bidgway, who 
writes: “In our somewhat extensive series of Junco monianus, I 
find only one specimen from Colorado. This is a female, No. 
109,943, U. S. N. M., collected at Pueblo, October 29, 1886, by 
C. W. Beckham. There are several examples from New Mexico 
and Arizona; all fall and winter birds.” Mr. C. E. Aiken took 
this form at Hamah in February, 1899. He also has several 
specimens in his collection taken March 2, March 27 and 
October 25. The species therefore stands in the Colorado list as: 
Winter visitant, not uncommon; arrives the last of October and 
remains until late in March. 
Page 105. 569. Junco caniceps. Gray-headed Junco. 
Breeds abundantly at Breckenridge, and in 1898 one 
nested under the eaves of Mr. Carter’s house. A very late 
record for the plains was one taken by Mr. C. E. Aiken at Limon 
on May 25, 1899. 
Page 106. 573a. Amphispiza bilineata deserticola. Desert 
Sparrow. 
This is the name now given to the bird that was formerly 
entered as the Black-throated Sparrow. Mr. P. L. Jones reports 
finding a nest with young near Canon City in 1888. This is the 
only time he saw the bird there in five years’ residence. 
Page 106. Add. [578. Peuceea cassini. Cassin’s Sparrow. 
“Central and western Kansas, southward and westward through Texas, 
New Mexico, Arizona and southern Nevada.”—(A. O. U.) It would be difficult 
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