28 PACIFIC COAST AVIFAUNA No. 12 
22, Larus brachyrhynchus Richardson 
SHORT-BILLED GULL 
The only record for this species is that of three immature specimens taken 
by A. van Rossem (MS) at Catalina, February 11, 1910, two of which are now 
in my collection. 
23. Larus heermanni Cassin 
HEERMANN GULL 
Blasipus belcheri (1) Cooper, Proc. Calif. Acad. Sci., tv, 1870, p. 79. 
Larus heermanni (2) Baird, Brewer and Ridgway, Water Birds N. Am., 1, 1884, p. 253. 
(3) Blake, Auk, Iv, 1887, p. 329. (4) Grinnell, Pasadena Acad. Sci., 1, 1887, p. 24. 
(5) Grinnell and Daggett, Auk, xx, 1903, pp. 28, 30, 37. (6) Breninger, Auk, xx1, 
1904, p. 219. (7) Mearns, Bull. U. S. Nat. Mus., ivi, 1907, p. 142. (8) Linton, Con- 
dor, x, 1908, p. 82. (9) Linton, Condor, x, 1908, p. 125. (10) Willett, Condor, xn, 
1910, p. 173. (11) Willett, Pac. Coast Avif., 7, 1912, p. 14. (12) Cooke, U. S. Dept. 
Agric., Bull. 292, 1915, p. 49. 
Larus heermannii (13) Streator, Proc. Sta. Barbara Soc. Nat. Hist., 1, 1887, p. 22. (14) 
Wright and Snyder, Condor, xv, 1913, p. 89. 
Larus heermani (15) Streator, Orn. & Ool., x11, 1888, p. 54. 
These birds are to be met with off the coast of southern California the year 
round, but the majority leave for the south about Mareh. During July, birds of 
the year begin reaching us. Heermann (2) said that this gull breeds on the 
Coronados, and J. G. Cooper, that it probably did so on other islands south of 
San Francisco. As it is now pretty well proven that the species does not nest 
on the seaward coast north of Cape San Lueas at least, there must have been mis- 
takes in regard to the above statements. 
The Heermann Gull as a rule is not as fond of coming close to shore as are 
t=) 
the other gulls, but prefers to stay out in the channel, where the usual method 
of securing a meal is to haunt some patient pelican and wildly grab at any fish 
which the latter may capture. C. B. Linton (8) found that at Santa Cruz Isl- 
and, during November and December, 1907, their principal food consisted of 
shrimps which they caught in the kelp, and I have watched them catching sar- 
dines two or three inches long. 
24. Larus philadelphia (Ord) 
BONAPARTE GULL 
Larus philadelphia (1) Howell and van Rossem, Condor, x11, 1911, p. 209. 
Abundant during migrations along the mainland coast, but seldom wander- 
ing out to the islands. During the latter part of April, 1911, A. van Rossem and 
I (1) noted several at Santa Cruz Island. 
Xema sabini (J. Sabine) 
t 
OV 
SABINE GULL 
Xema sabini (1) Willett, Pac. Coast Avif., 7, 1912, p. 15. (2) Wright, Condor, xv, 1913, 
p. 227. (3) Grinnell, Pac. Coast Avif., 11, 1915, p. 28. (4) Cooke, U. S. Dept. Agric., 
Bull. 292, 1915, p. 65. . 
