Mar., 1917 LIST OF BIRDS BREEDING IN SAN FRANCISCO COUNTY 61 



47. Melospiza melodia santaecrucis. Santa Cruz Song Sparrow. Abundant; 

 probably next to the Nuttall Sparrow in point of numbers among the native birds. 



48. Melospiza melodia pusillula. Salt Marsh Song Sparrow. Resident in marshes 

 of the southeastern part of the county; range extends north to lslais Marsh. 



49. Pipilo maculatus falcifer. San Francisco Towhee. Common; many nesting 

 records. 



50. Zamelodia melanocephala capitalis. Pacific Black-headed Grosbeak. Rare; 

 seen only occasionally in summer. Young birds were noted in Golden Gate Park by 

 Storer. 



51. Passerina amoena. Lazuli Bunting. Rare; a pair was observed by J. R. 

 Pemberton at Eighteenth and Ashbury streets, carrying nesting materials, during the 

 latter part of May and the early part of June, 1915. Mr. Pemberton writes us that he 

 left the city on June 10th and had not found the nest at that time. 



52. Petrochelidon lunifrons lunifrons. Cliff Swallow. Nesting colonies were 

 discovered on a barn south of the Potrero District, June 7, 1916; also at Good Brothers 

 Dairy on Corbett Road, June 21, 1916. 



53. Riparia riparia. Bank Swallow. Hundreds breed in the cliffs of Lake Mer- 

 ced, and a few along the ocean cliffs. 



54. Hirundo erythrogaster. Barn Swallow. A nest was found in a garage at In- 

 gleside Beach, June 16, 1916. It is not abundant in the breeding season. 



55. Lanius ludovicianus gambeli. California Shrike. Resident in limited num- 

 bers in the southwestern part of the county. One nest found at Ingleside Golf Links. 



56. Vireosylva gilva swainsoni. Western Warbling Yireo. Not common, but 

 seen often enough in summer to make the nesting of the species in the county probable. 



57. Vireo huttoni huttoni. Hutton Vireo. Not common. One was seen feeding 

 a young bird in Golden Gate Park, May 1, 1916. 



58. Vermivora celata lutescens. Lutescent Warbler. Reported by Carriger to 

 have bred on Strawberry Hill previous to 1906. If it nests in the park at present it is 

 rare. 



59. Dendroica aestiva brewsteri. California Yellow Warbler. Common; many 

 nesting records. 



60. Geothlypis trichas sinuosa. Salt Marsh Yellowthroat. Common; many nest- 

 ing records. 



61. Wilsonia pusilla chryseola. Golden Pileolated Warbler. Rather common; 

 many young seen. 



62. Salpinctes obsoletus obsoletus. Rock Wren. Breeds on the Farallon Islands. 



63. Thryomanes bewicki spilurus. Yigors Wren. Common; many nesting rec- 

 ords. 



64. Troglodytes aedon parkmani. Western House Wren. Rather rare; noted 

 about the buildings in the western part of the park, May 30, 1916. Breeding probable. 



65. Telmatodytes palustris paludicola. Tule Wren. Resident in small numbers 

 at Lake Merced. 



66. Baeolophus inornatus inornatus. Plain Titmouse. Rare; seen only occasion- 

 ally in summer. One breeding record (Ray, Condor, vm, pp. 42-44). 



67.. Penthestes rufescens barlowi. Santa Cruz Chickadee. Not uncommon. We 

 found several nests in the park and at Lake Merced. 



68. Psaltriparus minimus minimus. Coast Bush-tit. Common; many nesting rec- 

 ords. 



69. Hylocichla ustulata ustulata. Russet-backed Thrush. Rather common. Many 

 nesting records. 



70. Planesticus migratorius propinquus. Western Robin. Breeds in considerable 

 numbers in Golden Gate Park and at Sutro Heights. 



Of the birds here listed some are certainly new arrivals. The Junco and 

 the Pine Siskin have doubtless been induced to remain here and to nest because 

 of the approximately boreal conditions brought about by the planting of trees. 

 The Western Robin has not been noted as a breeding bird of the eounty until 

 the last year or so. It seems to be losing its wildness and to be seeking closer re- 



