1912 BIRDS OF SOUTHERN CALIFORNIA 95 



Los Angeles County, April 23, 1905, and in April, 1902, 1 found it breeding com- 

 monly in a canon near Monrovia, the same county. I took three slightly incubated 

 eggs April 27, and another set of three, also slightly incubated, April 29. I have 

 been unable to find it nesting in this locality since 1902, although I have searched 

 for it on several occasions, so it is probably irregular in its nesting localities. 



321. (6461)) Vermivora celata sordida (C. H. Townsend). Dusky 

 Warbler. 



Common summer resident on the larger islands of the Santa Barbara group 

 and on the mainland coast in the vicinity of San Diego. A few winter on the 

 islands but the majority migrate to the mainland, where they may be found from 

 the middle of July until April, in the willow thickets of the lowlands and the oak 

 regions of the mesas. The type of this sub-species was taken by C. H. Townsend 

 on San Clemente Island, January 25, 1890 ( Proc. U. S. Nat. Mus. xiii, 1890, 

 139). It is most abundant on the islands of Santa Catalina, San Clemente and 

 Santa Cruz. On the latter island, C. B. Linton and myself found it fairly com- 

 mon in November and December, 1907. 



O. W. Howard found several nests containing eggs and young on Catalina 

 Island in April and May, 1905 (Warbler, ser. 2, n, 1906, 9), and R. M. Perez 

 took several sets on the same island in late April, 1911. Mr. Howard also took 

 four slightly incubated eggs on Santa Cruz Island, April 27, 1906, and H. J. Le- 

 lande took four slightly incubated eggs on Anacapa Island, April 6, the same year. 

 A. M. Ingersoll informs me that the Dusky Warbler breeds plentifully at Point 

 Loma and Coronado Beach, near San Diego. He has found at least a dozen nests 

 in these localities, all of which were within a mile of the salt water. 



322. (647) Vermivora peregrina (Wilson), Tennessee Warbler. 

 One record, that of an immature female taken by J. Grinnell in the Arroyo 



Seco, near Pasadena, September 27, 1897 (Pub. 2, Pasadena Acad. Sci., 1898, 

 45). Now no. 3177 collection J. Grinnell. 



323. (652b) Dendroica aestiva rubiginosa (Pallas), f Alaska Yellow- 

 Warbler. 



Occasional in migrations. E. A. Mearns took three specimens at Mountain 

 Springs, San Diego County. May 11, 1894 (Oberholser, Auk xiv, 1897, 78). 

 This locality is on the desert side of the mountains, about half way up the eastern 

 slope. H. W. Marsden took specimens at Witch Creek, San Diego County, dur- 

 ing 1904, as follows: Female, May 3: male. May 6: male, May 11, and male, 

 October 12 (Bishop, Condor vn, 1905, 143). Now nos. 10901, 10902. 10903. 

 11811 collection L. B. Bishop. 



324. (652c) Dendroica aestiva brewsteri Grinnell. California Yellow 

 Warbler. 



Common summer resident in wooded localities, especially along streams, 

 from the lowlands up to at- least 5200 feet in the mountain canons. Occurs at 

 much higher altitudes during the fall migration. Breeds mostly in late May and 

 early June. Noted by H. S. Swarth near Los Angeles from April 1 (1899) to 

 October 14 (1901). Extreme nesting dates are: Four eggs, fresh, taken by 



