fox sparrow: western mountain 1433 



Cucamonga Canyon, Volcan Mountains) and northern Baja Califor- 

 nia (Lagnna Hanson). 



Casual records. — Casual in migration to northeastern Nevada 

 (Secret Pass). 



Thick-billed Fox Sparrow (P. i. megarhyncha) 



Range. — Southwestern Oregon to northwestern Baja California. 



Breeding range. — The thick-billed fox sparrow breeds in the moun- 

 tains from southwestern Oregon (Onion Mountain, Robinson's Butte) 

 south through central northern California (Siskiyou Mountains at 

 Del Norte County line; Mount Orr; head of Dog Creek) and the 

 Sierra Nevada of California (exclusive of the Mono Lake district) 

 to lat. 37° N. (Kearsarge Pass); locally to west-central Nevada in 

 the Tahoe district. 



Winter range. — Winters in lowlands of central and southern Cali- 

 fornia (Tower House, Inskip Hill, Nicasio, Santa Cruz and Santa 

 Catalina islands, Witch Creek) and northwestern Baja California 

 (LaGrulla). 



Egg dates. — (The data refer to all California forms.) California: 189 

 records, May 21 to July 8; 93 records, June 1 to June 15. 



Trinity Fox Sparrow (P. i. brevicauda) 



Range. — Coast ranges, central and coastal California. 



Breeding range. — The Trinity fox sparrow breeds in the northern 

 and inner coast ranges of California south of the Trinity River (Horse 

 Mountain and Hayfork Baldy south to Mount Sanhedrin and Snow 

 Mountain). 



Winter range. — Winters in central and southern coastal California 

 (Howell Mountain, Nicasio, Santa Monica Mountains, Santa Cata- 

 lina Island). 



Mono Fox Sparrow (P. i. monoensis) 



Range. — Mono district of California and Mineral County, Nevada 

 to northwestern Baja California. 



Breeding range. — The Mono fox sparrow breeds in the Mono dis- 

 trict on the east flank of the central Sierra Nevada in California 

 (Woodfords, Mammoth, Benton); locally in adjoining Mineral 

 County, Nevada (Walker River Range). 



Winter range. — Winters in central interior and southern coastal 

 California (Coulterville; Mount Wilson; Santa Catalina and San 

 Clemen te Islands) and northwestern Baja California (20 miles east 

 of Ensenada; La Grulla). 



C46-737— 68— pt. 3 13 



