322 Rockwell and Wetmore, Birds of Golden, Colorado. [july 



common in Golden and also seen along Clear Creek. April 11a pair were 

 evidently ready to build in an old boiler house north of the C. & S. tracks 

 near Golden. They were seen in this vicinity all summer and in August 

 we took one on South Table Mountain. In November they were gathered 

 in flocks in the Clear Creek bottoms where several more were taken. 



46. Loxia curvirostra bendirei. Bendire's Crossbill. — A good 

 series of Crossbills collected on Lookout Mountain in April and May are all 

 referable to this subspecies. The first ones were seen April 18, when we 

 encountered a small flock and they were fairly common up to May 23. 

 Usually they fed in the pine trees on the cones and were hard to locate when 

 silent. Their biUs however made a loud cracking noise when feeding, 

 betraying their presence and the birds themselves were very tame. On 

 one occasion we observed a flock of about 50 feeding on the ground around a 

 spring but when flushed they went back into the pines and remained quiet, 

 their throats being full of seeds. In none of those taken were the sexual 

 organs developed and there were no indications of their having bred at 

 any recent period, all the birds taken being adults. Some of the males 

 taken were very brightly colored and all were in very good condition. 



47. Acanthis linaria linaria. Redpoll. — Two of these birds seen 

 on Clear Ci'eek April 3, and one taken. During the latter part of March 

 others were seen but they had aU gone north by the end of the first week in 

 April. 



48. Astragalinus tristis. Goldfinch. — May 6 there were large 

 flocks of migrating Goldfinches in the cotton woods along Clear Creek and 

 they were seen occasionally until the first of June. They were not" noted 

 again until the last week in October and on November 6 a small flock was 

 seen on Lookout Mountain at 7,500 feet. Probably both tristis and pallidus 

 occur here but this cannot be stated positively on account of lack of mate- 

 rial. An adult male taken May 31 at Castle Rock, Colo., is intermediate 

 between the two, but apparently nearer tristis. An adult female from 

 Willard, Colorado, taken October 22, is true pallidvs, being larger, paler and 

 grayer than eastern birds. These are the only Colorado specimens 

 available at present. 



49. Astragalinus psaltria psaltria. Arkansas Goldfinch. — Dur- 

 ing the summer this species was fairly common in Golden and casual along 

 Clear Creek. September 19 a small flock was seen at the mouth of Chim- 

 ney Gulch and from then until October 10, they were fairly common up to 

 7,000 feet, usuaUy being seen in flocks of from four to six, probably family 

 parties. 



50. Spinus pinus pinus. Pine Siskin. — The series of this bird in 

 the present collection shows the usual variation of color, irrespective of age 

 or sex. Some have a very distinct buffy tinge on the under parts and these 

 have the dusky streaks on the ventral surface much narrower and paler in 

 color. The first birds were noted on Lookout Mountain April 18 and the 

 first week in May they were feeding like Astragalinus tristis in flocks in the 

 tops of the cottonwoods along the creek bottoms. These flocks did not 



