94 Scott 07i Birds observed at Twin Lakes, Colorado. 



On the 14tli of June I took a nest with four fresh eggs; July 4, a nest 

 with four eggs slightly incubated ; July 9 I met with four young nearly 

 fully fledged, and on July 11 with two young just hatched. 



26. Zonotrichia leucophrys. Whitp>crowned Sparrow. — June 

 9 I saw two in crossing the Kenosha range twenty miles east of Fairplay, 

 at an elevation of 9,500 feet; also June 12, in crossing Weston's Pass, 

 twenty miles southwest of Fairplay. These were almost the only birds to 

 be met with, and on July 20, when again crossing this pass, they were 

 even more abundant. That they bi-eed in large numbers at high eleva- 

 tions, such as the point just spoken of, there can be no doubt. On the 

 28th of June I took a female, on one of the hills a mile and a half north 

 of the Lakes, at an altitude of a little less than 10,000 feet, which was 

 evidently breeding, as, on dissection, it was plain that eggs had been 

 laid. 



27. Pipilo chlorurus. Blanding's Finch. — Not very common. 

 The habits of this species remind one of the Sparrows of the genus Zunotri- 

 cJda, but its peculiar notes resemble much more those of the Pipilos. 



28. Agelaeus phoeniceus. Red- winged Blackbird. — Not common. 

 Breeds. 



29. Xanthocephalus icterocephalus. Yellow-hkaded Black- 

 bird. — Very rai-e. A single adult male was taken July 20. I am not 

 aware that this species has been before taken at this altitude. 



30. Sturnella magna var. neglecta. Meadow Lark. — Rare. Met 

 with on one occasion, July 10. 



31. Scolecophagus cyanocephalus. Brewer's Blackbird. — 

 Abundant. Breeding June 13. One of the most famiUar birds about 

 the ranches. 



32. Corvus corax. Raven. — Not common. Noted several times. 



33. Picicorvus columbianus. Clarke's Crow. — Common in lo- 

 calities. Met with in enonnous flocks June 24, and for several days after. 

 These flocks seemed to be passing through, but several pairs were resident 

 about the Lakes. 



34. Pica melanoleuca var. hudsonica. Magpie. — Not common. 

 Occasionally met with. A few breed. Said to be common in fall. 



35. Cyanurus stelleri. Steller's Jay. — Not very common. I 

 took young fully fledged, June 25. 



36. Perisoreus canadensis. Canada Jay. — Common. The speci- 

 mens met with were all in very worn phmiage, and had evidently bred 

 some time before my arrival. 



37. Contopus borealis. Olive-sided Flycatcher. — Not uncom- 

 mon. Met with everywhere in pairs, June 15. 



38. Contopus virens var. richardsoni. Western Wood Pewee. 

 — Common. On July 111 took a nest containing three eggs. The nest 

 was built where three branches crossed in a brush-heap two feet from the 

 ground. It differs widely from that of the typical virens, as it is composed 



