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 May, 1913 NOTES ON SOME MESA COUNTY, COLORADO, BIRDS 111 The skins were identified by Mr. H. C. Oberholser of the Biclogical Survey, to whom acknowledgments are due for this and other identifications mentioned be- yond. Agelaius phoeniceus neutralis. San Diego Redwing. A small series oI red- wings collected at Mack were identified by Oberholser as ncttralis, making the first record for Mesa County. Zonotrichia leucophrys leucophrys. White-crowned Sparrow. Made its first appearance at Mack sometime between April 29 and May 6. I was away from there, out of the County, between those dates. It was common May 6. Zonotrichia leucophrys gambeli. Gambel Sparrow.' This bird wa common at Mack April 2, and remained so until the 29th. It no doubt left oon after that date for I saw none on my return May 6, when its place had been taken by the typical form. Spizella breweri. Brewer Sparrow. One collected and others seen, May 6, near the Grand River, three miles west of Mack. First record for Connty. Juneo oreganus shufeldti. Shufeldt Junco. One collected near Mack, May 6, and identified by Oberholser. First record for County. Junco hyemalis mearnsi.. Pink-sided Junco. This species was seen and col- lected at Mack, April 26 and 27, and at the Sieber Ranch, May 2- 5. The five specimens collected were all females, the males probably having left for their summer homes some time previously. Rockwell gives this species merely a pass- ng mention, without locality, so I have thought it best to make this definite rec- 0rd. Amphispiza bilineata deserticola.-Desert Sparrow. Seen and collected near Mack, April 23-27, the first record for Mesa County. The birds frequented a mesa with scattering cedars and pinohs on it about tw, o and one-half miles west of. Mack, apparently preferring the low brush about the edges of the gulches and at the foot of the mesa. Lanivireo solitarius plumbeus. Plumbeous Vireo. Taken on Little Dolores Creek, near the Sieber Ranch, May 2. The first record for the County. Vennivora celata. Orange-crowned Warbler. Taken at the Sieber Ranch May 2, the first record for the County. The specimen was identified by Ober- holser as belonging to his subspecies orestera, which, however, has not yet been accepted by the A. O. U. Committee. Dendroica nigrescens. Black-throated Gray Warbler. One collected at the Sieber Ranch May o, and my notes say it was very common there May 4. Rockwell gives but one record of it, at Grand Junction. lolioptila eaerulea obseura. Western Gnatcatcher. Collected at the Sieber Ranch May IO-t 4. Several were seen. This is another of the birds of which Rockwell gives but one record. SOME FURTHER NOTES FROM THE TAHIOE REGION By MILTON S. RAY WiTH TWO PHOTOS BY OLUF J. HEINEMANN HE FIRST three weeks of June, 19o9, were spent in field work at various elev. ations around the southern end of Lake Tahoe. From our varied ex- periences, however, I have only culled those notes which are most Ilkely to be of interest.