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July, 1911 WINTER BIRDS OF THE SALTON SEA REGION 137 54. Lanius ludovicianus excubitorides. White-rumped Shrike. In consider- ably less numbers than in winter. A nest was found March 21 with three young just able to fly and another the 27th with five pipped eggs, only five feet from the ground in an "inkweed" bush. 55. Vireo vicinior. Gray Vireo. A specimen eoilected March 26 in the mes- quites, and another heard the same day. 56. Vermivora luciae. Lucy Warbler. An adult female taken in a mesquite over the tent on March 29. 57. Vermivora celata lutescens. Lutescent Warbler. Only one seen, an adult female collected on March 28. 58. Dendroica auduboni. Audubon Warbler. Abundant everywhere until March 25. After this they decreased rapidly in numbers and the last one was seen March 29. 59. Dendroica nigrescens. .Black-throated Gray Warbler. On March 51 eight passed through and one was taken. No others were noted. 60. Geothlypis trichas occidentalis. Western Yellowthroat. In breeding con- dition but no nests found. Common. 61. Wilsonia pusilia chryseola. Golden Pileolated Warbler. Appeared March 22 (two birds seen), and were common from then until we left. 62. Anthus rubescens. Pipit. A single bird seen on the alkali flat near Sal- ton Sea March 19, and one on the 22nd. 63. 0reoscoptes montanus. Sage Thrasher. Mr. Wright took a pair the even- ing of March 22 in the brush near a canal. Single birds frequently seen from then on. 64. Mimus polyglottos leucopterus. Wesi?ern Mockingbird. A pair were building in a dead mesquite near camp and had a half completed nest on March 31. The bulk of those which were so common here in January were probably winter visitants only. 65. Toxostoma crissale. Crissal Thrasl?er.. Fairly common but shy. Several nearly grown young with tail feathers about three inches long were taken, and were from two different nests. Mr. Wright found a nest in a clump of mistletoe March 21 which contained one egg evidently deserted. The adults were already in worn, ragged plumage--what they must look like by July! 66. Heleodytes brunneicapffius couesi. Cactus Wren. Two pairs with nests, the contents of which could not be ascertained, in the mesquites near camp. 67. Thryomanes bewicki charienturus. San Diego Wren. Not common. One of the two noted was collected and is this form. 68. Auriparus flayJeeps. Verdin. Common. Many nests were found ready for eggs, usually surrounded by three or four dummies. Two sets were taken March 21 and 26, containing slightly incubated sets of four and three eggs' respec- tively. All nests were in mesquite trees and the great majority under six feet from the ground. 69. Regulus calendula calendula. Ruby-crowned Kinglet. Several seen up to March 25. 70. Polioptila caerulea obscura. Western Gnatcatcher. Not common. One collected March 20 and another heard on the 21st. 71. Polioptila plumbea. Plumbeous Gnatcatcher. Abundant. Birds taken were nearly ready to breed. A nest found on March 30 was just begun. 72. Planesticus migratorius propinquus. Western Robin.. Common. Feed- in g on the mistletoe berries, many of which were still hanging. Most of the robins left by the 25th and 26th of March, but one or two could be seen every day till the 29th.