The greatest number of individuals and species are found during 

 spring and fall migrations along the Pacific Flyway of Southern 

 California. Less than 18% of the birds (28 species) found during the 

 migration breed in the region. The single most abundant species, the 

 sooty shearwater, Puffinus griseus , breeds in the southern hemisphere. 



Four species of marine birds in Southern California are endangered. 

 They are the brown pelican, the clapper rail, the black rail. 

 Lateral 1 us jamaicensis , and the least tern. 



The wildlife primarily affected by OCS development are the marine 

 mammals, although some upland species suffer habitat loss due to oil 

 and gas processing and to construction of storage facilities in canyons 

 and on bluffs along the coast. Thirty-six species of marine mammals 

 are known to inhabit the entire California coast, but the rarity of 

 some species limit life history studies to about half of the total. 



Many animal species, such as seals and seal lions, depend upon 

 land for part of their life cycle. Other marine mammals such as the 

 cetaceans and the sea otter, Enhydra lutris , spend their entire lives 

 in the water. Seven pinnipeds reported in the Southern California 

 Bight use breeding grounds and haulout areas on the islands and some 

 remote spots along the coast. The cetaceans found commonly in the 

 region are the California grey whale, Eschrichtius robustus , which 

 migrates annually from the Bering Sea to Mexico and back; the bottom- 

 nose dolphin, Tursiops truncatus gilli ; and the harbor porpoise, 



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