172 TIIK CONDOR Vol. X 



abundant. Probably the most abundant breeding sparrow in the County. Arrives 

 from the south the middle of April and breeds during May, June and Jul3^ raising 

 two broods. Frequents cultivated sections and breeds abundantly in young grain 

 and alfalfa fields up to at least 8000 feet. During late summer they are found in 

 great numbers in the freshly cut hay and grain fields. Leaves for the south in 

 October. 



Passerculus sandwichensis alaudinus. Western Savanna Sparrow. Summer 

 resident, common. Arrives about the middle of April and breeds during May, 

 June and July to at least 8000 feet, and raises two broods. Its favorite nesting site 

 is in the alfalfa fields, where it conceals its nests in the dense alfalfa plants close to 

 or upon the ground. In company with the Western Vesper Sparrow, Western 

 L,ark Sparrow and Western Chipping Sparrow it is abundant in the ha}^ fields in 

 late summer. 



Chondestes grammacus strigatus. Western lyark Sparrow. Summer resident, 

 common. Not as frequently met with as the two preceding species, but by no 

 means of uncommon occurrence. Their general habits do not differ greatly from 

 the preceding. Mr. Sullivan's extreme dates of arrival and departure are April 1 

 and September 22. 



Zonotrichia leucophrys. White-crowned Sparrow. I have occasionally ob- 

 served this bird in migration but have no information relative to its resident abun- 

 dance. Judging from the fact that Carter found it breeding abundantly at 

 Breckenridge I am inclined to think it is a regular summer resident in the higher 

 portions of the County. Mr. E. R. Warren took one at Grand Junction October 2, 

 1905, and Mr. Sullivan considers it a common migrant there. 



Zonotrichia leucophrys gambeli. Intermediate Sparrow. Mr. Sullivan in 

 speaking of this species at Grand Junction whites, "Common migrant. The most 

 numerous of all the migrating sparrows. I have seen them here all winter 

 (;[g03-4). Usually they disappear altogether. They are usually in the country 

 from the south by April 1 to 15 and return October 1 to December 15. 



Spizella monticola ochracea. Western Tree Sparrow. Winter resident, abun- 

 dant. The only sparrow occurring in any abundance during the winter months. 

 Arrives in October and November and frequents wooded or cultivated sections up 

 to at least 7500 feet. By April 1 nearly all have departed for their northern breed- 

 ing grounds. 



Spizella socialis arizonae. Western Chipping Sparrow. Summer resident, com- 

 mon. Arrives about the middle of April (my earliest date is April 2, 1902), and 

 breeds up to at least 8000 feet, during May and June. It is more common below 

 6500 feet than above and frequents cultivated regions. It is particularly abundant 

 during August and September in the hay fields. Mr. E. R. Warren has seen it at 

 Grand Junction as late as October 3. 



Junco montanus. Montana Junco. Prof. Cooke says, "Several were seen and 

 one collected, in late September, 1906, by Merritt Cary a few miles north of the 

 northern line of the County. A day or two later he saw a flock of birds, inside the 

 county limits that were undoubtedly the same species." 



Junco aikeni. White-winged Junco. Junco hyemalis connectens. Coues Junco. 

 Junco mearnsi. Pink-sided Junco. Winter residents, abundant. All three of 

 these Juncos occur abundantly thruout the winter, but I have very little definite in- 

 formation as to their relative abundance. Mr. Sullivan says that coimcctois is the 

 commonest form found at Grand Junction. The bulk of the northward migration 

 occurs about April 1. 



Junco caniceps. Gray-headed Junco. Summer resident. During the summer 



