Recent pronghorn (Antilocapra americana) translocations to southern California and the establishment of captive populations of endangered desert pronghorn have revived interest in the historical occurrence of pronghorn in the Californias. Adding to this interest is the recent widespread replacement of coastal sage scrub vegetation in southern California by annual grasslands more favorable to pronghorn. We have searched the scientific and popular literature, as well as museum collections, to locate pronghorn antelope occurrences from below San Francisco Bay southward through the Baja California peninsula. Our results show that pronghorn were widely distributed, and often abundant, on nearly all of the plains and valleys on both sides of the Coastal and Peninsular ranges to at least as far south as the Magdalena Plain.
Brown, David E.; Cancino, Jorge; Clark, Kevin B.; Smith, Myrna; and Yoakum, Jim
"An Annotated Bibliography of References to Historical Distributions of Pronghorn in Southern and Baja California,"
Bulletin of the Southern California Academy of Sciences:
Available at: http://scholar.oxy.edu/scas/vol105/iss1/1