48 PACIFIC COAST AVIFAUNA No. 7 



Cooper, fifteen miles north of San Diego, March 5, 1862; and male, collector 

 unknown, taken at San Bernardino, December 12, 1864. F. Paine took a male 

 in the Volcan Mountains, San Diego County, February 25, 1884 (Emerson, 

 iJull. Cal. Acad. Sci. ii, 1887, 421), and A. L. Heermann found the species 

 abundant at some seasons in the mountains of San Diego County (Pac. R. R. 

 Rep. X, 1859, 32). 



162. (349) Aquila chrysaetos (Linnaeus). Golden Eagle. 



Rather common resident, mostly in mountainous regions. Breeds in Feb- 

 ruary and early March. H. C. Burt took two fresh eggs near Santa Paula, 

 Ventura County, March 18, 1910. W. L. Chambers took two slightly incu- 

 bated eggs near Covina, Los Angeles County, March 5, 1910. I found a nest, 

 containing two half-incubated eggs, near Highlands, San Bernardino County, 

 April 4, 1897. A. M. IngersoU has taken many sets of eggs of this bird in 

 the vicinity of San Diego. He informs me that he believes fresh eggs found 

 after March 10 are those of birds which have lost their first laying. His 

 earliest and latest dates for the first laying are, respectively, set of two fresh 

 eggs taken February 9, 1910, and set of two, one-third incubated, March 15, 

 1895. Mr. IngersoU states that, upon being robbed, the birds will lay a second 

 and even a third set. He has found third sets as late as May. 



163. (352) Haliaeetus leucocephalus leucocephalus (Linnaeus). Bald 

 Eagle. 



Common resident of the Santa Barbara Islands, occasional on the main- 

 land coast. Breeds mostly in late February and early March. Recorded by 

 H. W. Henshaw as abundant on the mainland of southern California in 1876 

 (Ann. Rep. Ch. Eng. U. S. Geol. Surv., 1876, App, JJ, 264), but now common 

 only on the islands. Two considerably incubated eggs taken by W. L. Cham- 

 bers near Santa Monica, Los Angeles County, March 13, 1897 (Grinnell, Pub. 

 2, Pasadena Acad. Sci., 1898, 22). Two fresh eggs taken by E. Davis near 

 Laguna, Orange County, March 5, 1895, and two young birds about a month 

 and a half old noted by Mr. Davis in the same locality, March 15, following 

 (Nidologist IV, 1897, 78). In June, 1910, I noted many nests of this species, 

 all of which contained nearly full-grown young, on Anacapa, Santa Cruz, Santa 

 Rosa and San Miguel islands. In June, 1911, I saw a pair of birds on Santa 

 Barbara Island, and in March. 1905, I took two sets of eggs on Catalina. 

 C. B. Linton has taken eggs on San Nicolas and San Clemente. 



164. (355) Falco mexicanus Schlegel. Prairie Falcon. 



Resident east of the mountains. Occurs on the Pacific slope in fall, winter 

 and spring. Noted as follows : Adult male taken by J. Dixon at an altitude 

 of 8000 feet on Mt Pifios, Ventura County, July 4, 1904 (Grinnell, Auk xxii, 

 1905, 383). Immature female taken by H. S. Swarth in the San Fernando 

 Valley, Los Angeles County, December 13, 1901, and adult male taken by Mr. 

 Swarth in the same locality, January 20, 1902. Bird seen by F. S. Daggett in 

 the San Fernando Valley, November 1, 1902, and another in the Arroyo Seco, 

 near Pasadena, September 28, 1901. Specimen taken by J. Grinnell in Eaton 



