Island Fox > Natural History > Conservation  > Studies > Recent Events > Captive Releases > Ear Tumor Study > Survival Monitoring

Four of the six island fox subspecies have recently suffered marked population declines caused by disease (Santa Catalina Island) and predation by golden eagles (Aquila chrysaetos; on San Miguel, Santa Cruz and Santa Rosa islands). These four subspecies were federally listed as endangered on 05 March 2004 (Federal Register: Volume 69, Number 44, Pages 10335–10353). The California Department of Fish and Game has classified it as threatened since 1971.

In response to the federal listing, the U.S. Fish and Wildlife Service established an Island Fox Integrated Recovery Implementation Team. The team consists of a  recovery coordination group (RCG), technical analysis groups and land managers (e.g., The Nature Conservancy, Catalina Island Conservancy).

 

A member of the "Class of 2008" on San Nicolas Island 

photo by Francesca Ferrara  

Island Fox Conservation Efforts

Santa Catalina
Island

Santa Cruz
Island

San Clemente
Island

San Nicolas
Island

  • Release of Captive-born Foxes to the Wild
  • Captive Breeding
  • Canine Distemper Virus Vaccination
  • Survival Monitoring
  • Annual Trapping to estimate abundance and distribution
  • Release of Captive-born Foxes to the Wild
  • Captive Breeding
  • Canine Distemper Virus Vaccination
  • Survival Monitoring
  • Annual Trapping to estimate abundance and distribution
  • Canine Distemper Virus Vaccination
  • Annual Trapping on long-term demography grids
  • Prey Sampling
  • Observing fox use of artificial foraging patches located within their native habitats as a measure of relative habitat quality (resource value)
  • Annual Trapping on long-term demography grids

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