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40 THE CONDOR Vol. XIV ' Toxostoma leontei leontei. Leconte Thrasher. Very rare, only six birds being seen throughout the year. With the exception of one all were on the open desert among the greasewood. A pair were secured. February 28. Salpinctes obsoletns obsoletns. Rock Wren. Common on the hillsides and mountains, and sometimes met with on the open desert. Catherpes mexicanus conspersus. Canyon Wren. Rare; only a few seen on the rocky mountain side during the winter. One taken October 16 has been iden- tified by Mr. Swarth. Troglodytes aedon parkmani. Western House Wren. One seen and secured September 16. Tehnatodytes palustris paludicola. Tule Wren. Very common among the weeds by the water hold throughout the year. One taken October 18 has been iden- tified by Mr. Swarth as belonging to this subspecies. Telmatodytes palustris plesius. Western Marsh Wren, Several seen, but not nearly as common as the foregoing and not observed till December 25. One gecured on that date has been identified by Mr. Swarth as T. p. p/esius. Certhia famiHaris zelotes. Sierra Creeper. But one seen, secured December 7. Identified by Mr. Swarth. Auriparus fiaviceps fiaviceps. Verdin. Very common in the mesquites through- out the year. I found complete sets of eggs by March 20. These birds use their nests the year round to roost in at night, and I have frequently captured the birds in them in the day time. Regulus calendula calendula. Ruby-crowned Kinglet. First seen October 22, and a week later were common among the mesquites and cottonwoods. By April 10 they had all left. Pol?optila caerulea obscura. Western Gnatcatcher. Common everywhere at all times. Polioptila plumbea. Plumbeous Gnatcatcher. Rare. Only four birds were seen, all in October. These kept close to the mesquite trees and did not go out upon the open desert as did ]?. c. obscura. Myadestes townsendi. Townsend Solitaire. One seen and secured January 3. Hylocichla guttara nanus. Dwarf Hermit Thrush. But two were? seen November 15 and January 7. One secured November 15 has been identified by Mr. Swarth. Planesticus migratorius propinquus. Western Robin. A single bird was secured October 13, but it was not 'till November ? that I saw &ny more. After that date they were very abundant at the water hole, feeding on mistletoe berries, as do so many of the birds here. By the first of May they had all left for their summer home. Ixoreus n?vius meruloides. Northern Varied Thrush. One seen and secured November 28. Identified by Mr. Swarth. SiaHa mexicana occidentalis. Western Bluebird. First seen November 14, after which date they became abundant. None were seen after March. Sialia urruoides. Mountain Bluebird. Only four were seen. one December 29, two February 20 and one March 5.