214 CALIFORNIA ACADEMY OF SCIENCES. 



part of summer. Later, although increased in abundance, 

 they are overshadowed, for some weeks at least, by the 

 Heermann's Gulls. No Gull rookeries were discovered. 

 The beds of kelp growing along the shore of the bay a 

 short distance out from the surf were favorite resting- 

 places for both Western and Heermann's Gulls. They 

 freely associated on the kelp and elsewhere. On the 

 rocks and on the open water, especially where there 

 were schools of fish, Brandt's Cormorants and California 

 Brown Pelicans were found in their society. Often great 

 congregations of Gulls and Cormorants were formed where 

 the fishing was good. Both Gulls were very unsuspicious 

 as a rule, and allowed the boat to draw quite close before 

 taking wing. They invariably decoyed when dead birds 

 were thrown out on the water to lure them, large flocks 

 as well as solitary birds being attracted. 



Larus californicus. Caeifornia Gull. — The first one 

 was noticed August ist. Toward the close of the month 

 they became somewhat common. They were found in 

 company with other Gulls. 



Larus heermanni. Heermann's Gull. — Immature 

 birds were common the latter half of June, but adults 

 were scarce. In the middle of July adults became abun- 

 dant, exceeding the immature birds or the Western Gulls. 

 By August, birds in dark plumage were in the ascend- 

 ency, a great inroad having occurred, adult birds, too, 

 having diminished. Toward the last of the month West- 

 ern and Heermann's Gulls for the second time appeared 

 to be equal in abundance. It is significant that Mr. Hen- 

 shaw found only adult Heermann's Gulls during the lat- 

 ter part of June at Santa Barbara (Ann. Rep. Chief En- 

 gineers, 1876, Appendix J J, p. 497), while I found al- 

 most exclusively immature birds at Monterey at the same 

 season of the year. 



