Mountain lion data

California Deer Population, Management News and Information Archive

California Mountain Lion Data and Research
The 1972 statewide lion population estimate was 2,400 from:  SITTON, L.W. 1973. Interim Report on Investigations into the Status of the California Mountain Lion. Calif. Dept. Fish and Game, 10 pp. 

Late 1980's statewide population of at least 5,100 mountain lions from:  MANSFIELD, T.M., and R.A. WEAVER. 1989. The
Status of Mountain Lions in California. Trans. West.  Sec. Wildl. Soc. 25:1989 p. 72-76.

- Predators and Prey—A Case of Imbalance 

California Mountain Lion Depredation*
YearPermits Issued (CDFG's records)Lions Killed (CDFG's records)Lions Killed (USDA's records)
197241N/A
1973214N/A
1974212N/A
1975152N/A
1976296N/A
1977397N/A
1978328N/A
19795121N/A
19804112N/A
19814112N/A
19826618N/A
19836327N/A
19849437N/A
198513558N/A
198613046N/A
198711350N/A
198814861N/A
198918277N/A
199019371N/A
199120173N/A
199219581N/A
199319071N/A
1994328121N/A
1995331117N/A
199628110567
19972539071
199823710991
1999233114102
2000245148139
2001187105121
2002218123104
2003206107110
2004245116133
2005222103120
200614577115
200719298137
Total532722781310
From mountainlion.org:  "... from 2003 through 2007, APHIS recorded 114 mountain lions killed in addition to CDFG's report of 501 (that's nearly another 23%).  Specific information about each depredation permit is not available to the public (to protect the landowner's privacy), so MLF is unable to verify the actual number of permits or lions killed."

Picture from mountainlion.org



... . Females fed on mule deer closer to developed areas and farther from riparian woodlands than expected based on the availability of these features across their home ranges. We suggest that mortality risk for females and their offspring associated with encounters with males may have influenced the different resource selection patterns between sexes. Males appeared to select mule deer feeding sites mainly in response to natural landscape features, while females may have made kills closer to developed areas in part because these are alternative sites where deer are abundant...

... deer populations have dropped precipitously—by more than 300,000 statewide since 1990 ...  CDFW’s Public Information Officer Andrew Hughan ... noted ... that a firm number for a population of animals doesn’t exist...  an estimated 4,000 to 6,000 mountain lions living in California, compared to 2,000 in 1970 ..,

... will establish an estimated population count of mountain lions for the first time in decades... able to fund a bulk of the new statewide mountain lion project with federal money from an excise tax on sporting arms and ammunition, after officials were able to draw a connection between lions and their affect on hunted species, like deer ...







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Deer Friendly,
Oct 13, 2015, 6:45 PM
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Deer Friendly,
Oct 27, 2015, 8:17 PM
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Deer Friendly,
Oct 27, 2015, 8:14 PM