Seabird Observations During Cetacean Surveys In Santa Monica Bay, California

Abstract

Seabird occurrence, distribution and behavior were assessed during cetacean surveys conducted between 2006–2007 in Santa Monica Bay, California. Gulls were most sighted year-round (55.63%), followed by brown pelicans (Pelecanus occidentalis; 19.0%), terns (6.61%) and Western grebes (Aechmophorus occidentalis; 6.53%). Gulls, shearwaters, and pelicans were often found foraging with short-beaked and long-beaked common dolphins (Delphinus delphis, D. capensis), and California sea lions (Zalophus californianus) near underwater canyons. Behavioral budget showed a predominance of passing by and floating activities. Feeding was observed in 6.5% of the sightings. This study provides baseline data for future seabird monitoring, conservation and management in the study area.