Bat Cave, on the north side of Santa Cruz Island in southern California, has the
largest nesting colony for the
ashy storm - petrel in the world, with over 100 nests.
the
largest colonies in southern California of Cassin's auklet, western gulls, Scripps's murrelets, rhinoceros auklets, tufted puf fins,
ashy storm - petrels, double - crested cormorants, pigeon guillemots, and black storm - petrels