40 PACIFIC COAST AVIFAUNA No. 7 



migration, September 1 to October 20. Spring migration. April 1 to May 15. 

 A. B. Howell saw three birds at Santa Barbara, August 29, 1911, and on Sep- 

 tember 5, following, a flock of over a hundred was seen. J. H. Bowles noted 

 the species in the same locality, November 25, 1911 (Condor, xiv, 1912, 10). 

 H. S. Swarth saw a flock of six or eight birds, one of which he secured, at Bal- 

 lona, Los Angeles County, May 18, 1900. He also saw two birds in the same 

 locality. May 22, following. C. B. Linton saw one bird in full summer plumage 

 on San Nicolas Island, June 1. 1910. Mr. Linton has also observed the species 

 during the winter months, as follows : Five birds taken from small flock at 

 Coronado Beach, San Diego County, November 6, 1906 ; several seen at Santa 

 Cruz Island, December 8, 1907, and noted fairly common at Alamitos Bay, Los 

 Angeles County, January 9-11, 1907. 



133. (273) Oxyechus vociferus (Linnaeus). Killdeer. 



Common resident of the lowlands. Occurs in summer up to about 7000 

 feet around mountain lakes. Breeds ordinarily from the latter part of March 

 until late May. Antonin Jay took a set of four slightly incubated eggs near El 

 Monte, Los Angeles County, April 1. 1906, and another set of four, incubation 

 commenced, at Nigger Slough, June 24. 1900. In June, 1907, I found the birds 

 common at Bear and Baldwin lakes, 6750. feet altitude in the San Bernardino 

 Mountains. 



134. (274) ^gialitis semipalmata (Bonaparte). Semipalmated Plo- 

 ver. 



Common migrant along the coast, occasional in summer. Most abundant 

 in the fall from September 15 to October 10, and in the spring from April 10 

 to May 15. J. H. Bowles has noted the species at Santa Barbara in the fall 

 from July 12 (1910) to November 1 (1911), and in the spring from April 18 

 (1910) to May 16 (1910) (Condor xiv, 1912. 11). It was noted by C. B. Linton 

 at San Nicolas Island, April 18 and May 6, 1910, and by E. A. Mearns and A. 

 W. Anthony on San Clemente Island in late August, 1894 (Bull. U. S. Nat. 

 Mus. 56, 1907, 141). I saw five birds of this species, one of which I secured, 

 at Alamitos Bay, Los Angeles County, June 29, 1907. 



135. (278) ^gialitis nivosa Cassin. Snowy Plover. 



Common resident along the coast. Breeds on sandy beaches of the main- 

 land and on several of the Santa Barbara Islands. Eggs are generally deposited 

 between May 1 and June 15. W. L. Chambers took three eggs, advanced in 

 incubation, at Ballona, Los Angeles County, April 15. 1907, and found a nest 

 containing one fresh egg, in the same locality, August 2, 1903. I found the 

 species fairly common on San Nicolas Island in June, 1911, and O. W. Howard 

 noted it on San Miguel Island in summer. 



136. (280) Ochthodromus wilsonius (Ord). Wilson Plover. 



One record. A male was taken by A. M. Ingersoll at Pacific Beach, San 

 Diego County, June 29, 1894 (Nidiologist ii, 1895, 87). This specimen is now 

 in the collection of J. Grinnell. 



