^°''i9?6^"^] Warren, Birds of the Elk Mountain Region, Colo. 311 



Spizella passerina arizonae. Western Chipping Sparrow. — Rather 

 common summer resident. I do not know what its range in altitude is, 

 I have seen it a httle above 9,000 feet. 



Junco shufeldti. Shufeldt's Junco. — A number of black-headed 

 Juncos taken near Crested Butte were identified by H. C. Oberholser of the 

 Biological Survey as shufeldti. It occui's during the spring and autumn 

 migi"ations, and at the latter season, at least, appears to be quite common. 

 None of the Juncos seem to winter in the region. 



Junco mearnsi. Pink-sided Junco.— Common in migration; arrives 

 as early as September 24, and remains through October. A note of October 

 17, 1902, speaks of this as being the most abundant of the three species 

 of Junco seen on the Irwin road. Ranges at least to nearly 11,000 feet. 



Junco phseonotus caniceps. Gray-headed Junco. — Common sum- 

 mer resident and breeder; I have no records to indicate the date of the 

 spring arrivals, except that it was seen at Hillside Ranch, April 20, 1901. 

 It remains through October. June 8, 1915, I found a nest with 3 eggs in a 

 tall tuft of dead grass on the south slope of Crested Butte Mountain; July 5, 

 1900, a nest with 4 newly hatched young was discovered under a Ijunch of 

 grass beside an old timber road south of Coal Creek, 5 miles west of Crested 

 Butte; July 11, 1902, young just able to fly seen on the " Smith Trail," 

 west of Crested Butte. 



Melospiza melodia montana. Mountain Song Sparrow. — My 

 records of this species for the region are decidedly scanty; it seems to be a 

 summer resident, but is apparently rare. One was seen at Hillside Ranch, 

 June 9, 1915. A Song Sparrow had a nest containing four eggs near a 

 spring on the mesa west of Muddy Creek, at about 7,500 feet. One night 

 a herd of cattle were about the spring and partly upset the nest; I straight- 

 ened it up the next morning, and the bird went on incubating, but I do not 

 know if she hatched the eggs. 



Melospiza lincolni lincolni. Lincoln's Sparrow. — Summer resi- 

 dent and breeder; not uncommon. I have no definite records as to the 

 vertical distribution of this species, my own being from 9,000 to 10,000 feet, 

 nor have I any dates of arrival and departure. 



Pipilo maculatus montanus. Mountain Towhee. — One seen on 

 Anthracite Creek, near Layton's ranch, September, 1902; never seen in 

 the Crested Butte region, which is too high. 



Oreospiza chlorura. Green-tailed Towhee. — Common summer 

 resident and l)reeder, preferring the open ground and sage brush, going to 

 nearly 10,000 feet at least. I have no records indicating the date of its 

 arrival in spring, nor the lateness of its stay in autumn, except September 7, 

 1902. About Crested Butte this Towhee seems to prefer to place its nest 

 in a sage brush, a foot or less above the ground. Nests with eggs found 

 June 19, 1900; June 16, 1902; June 22, 1902; all near Crested Butte. 

 These nests were all built of small twigs, lined with gi-ass and horsehair. 

 July 10, 1903, 3 young about ten days old were seen at Hillside Ranch. 

 On Muddy Creek, June 15, 1903, I discovered 3 nests with eggs, and one 

 with young on the 20th. 



