222 CALIFORNIA ACADEMY OF SCIENCES. 



were shyer than their larger congener. All had the white 

 patch on the flanks, but in some it was larger than in 

 others. No young birds were discovered. The eggs 

 examined, however, appeared to be well advanced toward 

 the hatching point. 



Pelecanus californicus, California Brown Peli- 

 can. — In June it was rather common. Through July 

 and August it increased steadily in abundance, toward 

 the last becoming one of the most conspicuous birds of the 

 bay. 



Histrionicus histrionicus. Harlequin Duck. — On 

 July 7th an adult male, on its way down the coast, was 

 captured as it was rounding Pt. Pinos. It was followed a 

 short time after by a second individual. 



Oidemia deglandi. White-winged Scoter. — Both 

 seasons White-winged Scoters were quite common off the 

 sandy beaches during the latter half of June. They were 

 present at intervals during July and August. During the 

 closing half of August birds apparently began to arrive 

 from the breeding grounds. 



Oidemia perspicillata. Surf Scoter. — Surf Scoters 

 were also present during summer, occurring in the same 

 manner as the White-winged, except there was no marked 

 inroad toward the end of August. 



Ardea herodias. Great Blue Heron. — After the ist 

 of July individuals were occasionally seen flying over the 

 bay and ocean or sitting upon the rocks along the shore. 

 July 13th a fine adult male was secured on the kelp, about 

 half a mile out on the bay. Another was seen the 

 same day on drifting kelp on the ocean at Pt. Pinos, the 

 sea being ver}' still. 



