90 PACIFIC COAST AVIFAUNA No. 7 



mountains and higher foothills. Of late years, seems to be increasing in numbers 

 in the lowland towns, nesting in crevices in buildings. Leaves mostly in Sep- 

 tember and arrives in late March and the month of April. Several seen by 

 H. S. Swarth at Long Beach, Los Angeles County, March 24, 1904. Recorded 

 IjV B. ^^^ Evermann as a moderately common summer resident of Ventura 

 County (Auk iii, 1886, 183), and found breeding at Santa Paula, Ventura 

 County, by H. C. Burt. P. L Osburn reports several pairs nesting yearly in 

 crevices in the Hotel Maryland in Pasadena. This colony numbered about 

 thirty pairs in 1909 (Condor xi, 1909, 208). Two sets, of five eggs each, were 

 taken by R. M. Perez and G. K. Snyder from under the eaves of a school 

 house in Los Angeles, June 2 and 17, 1910 (Condor xii, 1910, 133). J. Dixon 

 took four fresh eggs at San Onofre, San Diego County, May 30, 1904, and 

 noted several other pairs of birds in the same locality (Condor viii, 1906, 95). 

 C. S. Sharp found a pair breeding at Escondido (Condor ix. 1907, 89). 



302. (612) Petrochelidon lunifrons lunifrons (Say). Cliff Swallow. 

 Abundant summer resident from the lowlands up to 7500 feet in the 



mountains. Breeds, ordinarily, from April to July, at least two broods being 

 raised in a season. Earliest in the spring in Los Angeles County noted by 

 W. M. Pierce in San Antonio Canon, Eebruary 15, 1904. Latest in the fall 

 noted by J. Grinnell at Long Beach, September 7, 1895 (Pub. 2, Pasadena 

 Acad. Sci. 1898, 41). Sometimes remains considerably later, however, as E. 

 Davis found a nest containing three fresh eggs on the coast of Orange County, 

 September 1, 1894 ( Nidiologist ii, 1894, 30). J. G. Cooper noted the species 

 at San Diego from March 15 to October 5 (1862) (Lands Bds. Cal., 1870, 

 105). I observed them nest building on a barn near Compton. Los Angeles 

 County, March 26, 1910. and found them nesting abundantly on the trunks 

 of pine trees at Bear \'alley, San Bernardino Mountains, in June, 1907. 



303. (613) Hirundo erythrogastra Boddaert. Barn Swallow. 

 Common over the lowlands and foothill country during migrations, which 



occur mostly in April and September. A few reiuain through the summer and 

 nest under bridges or in caves along the coast and on the Santa Barbara Islands. 

 Antonin Jay took two sets, of four eggs each, near Santa Monica, Los Angeles 

 County, June 12, 1898. 



304. (614) Iridoprocne bicolor (Vieillot). Tree Swallow. 

 Common in s])ring and summer in the willow regions of the lowlands. 



The majority migrate south in the fall, but a few remain through the winter. 

 They become numerous in the spring about the middle of March and breed, 

 ordinarily, from the latter part of April through May. Extreme nesting records 

 are: Four eggs, fresh, taken by H. J. Lelande near El Monte, Los Angeles 

 County, April 15, 1897 (Grinnell. Pub. 2, Pasadena Acad. Sci., 1898. 42). and 

 four eggs, fresh, taken by Antonin Jay near Santa Monica. July 4. 1903. 



305. (615) Tachycineta thalassina lepida Mearns. Northern Violet- 

 green Swallow. 



Common summer resident of the Transition zone in the mountains and, 



