94 Scott on Birds observed at Twin Lakes , Colorado. 
On the 14th 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 breed in large numbers at high eleva- 
tions, such as the point just spoken of, there can be no doubt. On the 
28th of J une 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 Zonotri- 
clda , but its peculiar notes resemble much more those of the Pipilos. 
28. Agelaeus phceniceus. Red-winged Blackbird. — Not common. 
Breeds. 
29. Xanthocephalus icterocephalus. Yellow-headed Black- 
bird. — Very rare. 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 cyauocephalus. Brewer’s Blackbird. — 
Abundant. Breeding June 13. One of the most familiar 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 enormous 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 plumage, 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 
