Vol 'i920 XVI1 ] Lincoln, Birds of the Clear Creek District, Colo. 71 



winters when it feeds extensively on the seeds of the Russian Thistle 

 (Salsola pestifer). 



Astragalinus t. tristis. Goldfinch. — 



Astragalinus t. pallidus. Pale Goldfinch.— I am not at all satis- 

 fied with the published status of these two forms in eastern Colorado, and 

 in this particular District it is exceptionally confusing as one is either a 

 resident, or one a summer and the other a winter resident. The tallest 

 cottonwoods are selected for nest sites and large flocks are of daily note in 

 winter. 



Astragalinus p. psaltria. Arkansas Goldfinch. — Not common. 

 A few noted August 24, 1912, form my only record although it should be 

 more numerous as it nests regularly in Denver, and I have taken it at Morri- 

 son, eight miles south. 



Spinus pinus. Pine Siskin. — Winter resident; plentiful. Usually 

 associated with Astragalinus. Occasionally arrive by August 20 and I 

 have heard them singing all winter. 



Calcarius 1. alascensis. Alaskan Longspur. — Winter resident, 

 common some years. A good series was secured during the winter of 1912. 

 Always associated with Otocoris but are readily discernible both by flight 

 and note. 



Pooecetes g. confinis. Western Vesper Sparrow. — Common 

 migrant, especially in the fall, and a few no doubt nest on the bench lands 

 of the valley slopes. 



Passerculus s. alaudinus. Western Savannah Sparrow. — Not 

 common. Taken only on migrations; April 7 to 22, and in the latter part 

 of September. 



Ammodramus s. bimaculatus. Western Grasshopper Sparrow. 

 — Rare; one secured and two others seen July 28, 1912, in Hogback Val- 

 ley, north of Golden, and I have no doubt they had or were nesting there. 



Chondestes g. strigatus. Western Lark Sparrow. — Summer 

 resident; common. Arrives about the middle of May. 



Zonotrichia querula. Harris's Sparrow. — Winter resident; not 

 common. I believe many of these birds are overlooked as I have found 

 them extremely hard to raise from the dense thickets they frequent. Were 

 repeatedly seen and a few taken during the winter of 1912. 



Zonotrichia 1. leucophrys. White-crowned Sparrow. — Common 

 migrant, always found with Z. I. gambeli. Remain at times until the 

 first of December. 



Zonotrichia 1. gambeli. Gambel's Sparrow. — Plentiful winter 

 resident and present (rarely) to the twelfth of June. Usually a large 

 percentage of each flock will be in the immature plumage. 



Spizella m. ochracea. Western Tree Sparrow. — An abundant 

 winter resident. Comes in about the first of October and stays until the 

 middle of March or later, depending upon the severity of the last storms 

 of winter. 



