68 PACIFIC COAST AVIFAUNA: No. 11 
Status—Fairly common resident among the Santa Barbara Islands and on 
the precipitous portions of the mainland seacoast to the northward, as at Santa 
Cruz and Tomales Point (J. and J. W. Mailliard, MS). Has been found breeding 
also interiorly, as at Escondido, San Diego County (Sharp, Condor, Ix, 1907, p. 
86) ; and San Onofre, San Diego County (J. S. Dixon, Condor, vi, 1906, p. 96) ; 
also on the Bay marshes of San Mateo County (Littlejohn, MS). Occurs more 
widely and numerously in winter, invading the valleys generally west of the 
Sierran divide. 
202 (357) Falco columbarius columbarius Linnaeus 
NorTHERN PigEON Hawk 
Synonyms—Hypotriorchis columbarius; Falco lithofalco; Falco lithofalco 
var. columbarius; Aesalon columbarius; Pigeon Hawk. 
Status—Fairly common winter visitant south through the whole length of 
the state chiefly west of the Sierran divide. Two record-stations east of the 
divide: Little Owens Lake and Death Valley (A. K. Fisher, N. Amer. Fauna no. 
7, 1893, p. 40). While stated to occur in late spring and late summer, no reliable 
records of actual nesting within the state are known to me. 
203 (357a) Falco columbarius suckleyi Ridgway 
Buack Pigkon Hawk 
Synonyms—Falco lithofalco var. suckleyi; Black Merlin. 
Status—Rare winter visitant. Three recorded instances of occurrence: 
Yreka, Siskiyou County, October (Baird, Brewer, and Ridgway, Hist. N. Amer. 
Bds., m1, 1874, p. 147) ; Wagon Camp, Mount Shasta, August 8 (C. H. Merriam, 
N. Amer. Fauna no. 16, 1899, p. 113), identity not quite satisfactory ; specimen 
in Grinnell coll., taken by J. F. Illingworth at Claremont, Los Angeles County, 
December 6, 1895 (Willett, Pac. Coast Avif. no. 7, 1912, p. 49). 
204 (357b) Falco columbarius richardsoni Ridgway 
RicHARDSON PIGEON Hawk 
Synonyms—/alco columbarius, part; Palco richardsoni; Richardson Mer- 
lin. 
Status—Rare winter visitant. Three records: immature female taken in 
Walker Basin, Kern County, August 28, 1875 (Henshaw, Rep. Wheeler Surv., 
1876, p. 262); specimen taken in San Fernando Valley, Los Angeles County, 
October 31, 1903 (Daggett, Condor, vm, 1905, p. 82) ; immature female taken at 
Witch Creek, San Diego County, February 9, 1904 (Bishop, Condor, vu, 1905, 
p. 142). 
205 (360-+360a) Falco sparverius sparverius Linnaeus 
AMERICAN SPARROW Hawk 
Synonyms—Falco sparverius; Cerchneis sparverius; Tinnunculus — spar- 
verius; Tinnunculus sparverioides; Falco sparverius deserticola; Falco spar- 
verius phalaena; Desert Sparrow Hawk. 
