THE BIRDS OF BOULDER COUNTY 235 



510. Euphagus cyanocephalus — Brewer Blackbird. 



Abundant summer resident of plains and mountains up to 8,000 or 9,000 feet. Gale 

 says, under date June 15, 1887: "About this date Scolecophagus [ = Euphagus] cyano- 

 cephalus visits the range for some purpose or other. Do not know why." His latest 

 nests were June 5, so it is probably a post-nesting movement such as several species engage 

 in. 



51 ib. Quiscalus quiscula aeneus — Bronzed Grackle. 



Gale found it nesting on Boulder Creek on May 20, 1886, and Blanchard reported it 

 in Boulder Canyon in 1903. 



514a. Hesperiphona vespertina montana — Western Evening Grosbeak. 



Since 1901 it has been an abundant and regular winter resident of portions of Boulder, 

 feeding upon the box-elder seeds which remain on the trees nearly throughout the winter, 

 its presence being often detected by the broken-off seed wings under the trees. In 1908 

 some remained until at least May 18. Dille reported young birds at the edge of the 

 plains, Altona, and in the mountains on South St. Vrain, in August and September, 1904. 



515a. Pinicola enucleator montana — Rocky Mountain Pine Grosbeak. 



Resident in mountains. Gale appears to limit it to from 9,000 feet to timberline and 

 did not record any nests. I have only seen it occasionally in summer and autumn and not 

 below 10,000 feet, but Felger had one taken by Gale at 9,000 feet, November 15, 1887. 



518. Carpodacus cassini — Cassin Purple Finch. 



Gale found it nesting in mountains at Ward and Duck Lake. I have seen few and 

 only in winter at Boulder. 



519. Carpodacus mexicanus frontalis — House Finch. 



Abundant resident at base of foothills, nesting about the houses. Gale found it nest- 

 ing at Gold Hill, about 9,000 feet. 



5210. Loxia curvirostra stricklandi — Mexican Crossbill. 



Minot's record perhaps just over county line, but Gale found it nesting in the moun- 

 tains, recorded as L. c. bendirei (Auk, XXIV, 440), a subspecific name since rejected by 

 the A. O. U. Committee on Nomenclature. Felger has one taken by Gale at 10,000 feet 

 August 15, 1887, and one taken at" 9,000 feet, November 21, 1887. 



524. Leucosticte tephrocotis — Gray-crowned Leucosticte. 



One taken by Gale in mountains on January 20, 1886, was sent to Washington. One 

 in University collection was taken by Bragg in 1904. Blanchard and Sprague also noted 

 it in the mountains. Felger has one taken in the county, February 2, 1888, and nine 

 others without date. Boulder specimens from Mrs. Maxwell were used by Ridgway in 

 preparation of his monograph. 



524a. Leucosticte tephrocotis littoralis — Hepburn Leucosticte. 



Gale lists it as a winter bird in the mountains of Boulder County. Ridgway used 

 Boulder winter specimens from Mrs. Maxwell in preparation of his monograph. Felger 

 has two taken by Gale but without data. 



[525. Leucosticte atrata — Black Leucosticte. 



One in Mrs. Maxwell's collection, but locality unknown.] 



