22 PACIFIC COAST AVIFAUNA No. 11 
Status—Common winter visitant along our whole seacoast. Notably numer- 
ous on San Francisco Bay. Casual inland: Los Angeles (Swarth, Condor, 11, 
1900, p. 14). 
28 (53) Larus californicus Lawrence 
CALIFORNIA GULL 
Status—Common winter visitant in suitable localities throughout the state ; 
occurs along the whole seacoast, on all the large interior lakes from which we 
have records of any water birds at all, and along the larger streams. Occurs 
most widely at the period of dissemination in late summer. Breeds at Eagle 
Lake, Lassen County (Townsend, Proc. U. S. Nat. Mus., x, 1887, p. 191), and 
occurs in summer also on other lakes of northeastern California, from Lake 
Tahoe northward. 
29 (54) Larus delawarensis Ord 
RING-BILLED GULL 
Status—Common winter visitant coastwise from Tomales Bay (J. and J. 
W. Mailliard, MS) and San Francisco Bay southward (many records) ; occurs 
inland in migration: Owens Lake (A. K. Fisher, N. Amer. Fauna no. 7, 1893, p. 
14) ; Lake Tahoe (Henshaw, Rep. Wheeler Surv., 1877, p. 1322) ; Summit Lake, 
near Mt. Lassen (Townsend, Proc. U. S. Nat. Mus., x, 1887, p. 192) ; Ivanpah, 
San Bernardino County (Hollister, Auk, xxv, 1908, p. 457); Salton Sea (J. 
Grinnell, Condor, x, 1908, p. 186). According to Bishop (Condor, xm, 1910, p. 
174) certain records of ‘‘ Larus canus’’ may belong here. 
30 (55) Larus brachyrhynchus Richardson 
SHORT-BILLED GULL 
Synonyms—Larus canus; Larus canus var. brachyrhynchus; Mew Gull. 
Status—Fairly common winter visitant coastwise on salt water. Recorded 
as follows: Humboldt Bay (Townsend, Proce. U. S. Nat. Mus., x, 1887, p. 192) ; 
San Francisco Bay (J. G. Cooper, Proc. Calif. Acad. Sei., 1v, 1868, p. 10); 
Monterey Bay (Loomis, Proce. Calif. Acad. Sei., 2nd ser., v1, 1896, p. 24; Beck, 
Proe. Calif. Acad. Sei., 4th ser., m1, 1910, p. 63) ; Santa Barbara to San Diego 
(ITenshaw, Auk, 1, 1885, p. 232); Ventura (Evermann, Auk, 1, 1886, p. 88) ; 
San Diego, ete. (Saunders, Cat. Bds. British Mus., xxv, 1896, p. 283). 
31 (57) Larus heermanni Cassin 
HEERMANN GULL 
Synonyms—Blasipus heermanu; Blasipus belcheri; White-headed Gull. 
Status—Common at all seasons along our seacoast, at least as far north as 
San Francisco Bay (many records); most numerous in winter. In only one 
instance straying away from salt water: Sacramento River at confluence with 
Feather River (Newberry, Pac. R. R. Rep., v1, 1857, p. 105). No authentic ree- 
ord of breeding north of the Mexican boundary. 
