Endangered Foxes Poisoned by Rodenticides

CDFW

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http://www.dfg.ca.gov/

The California Department of Fish and Wildlife (CDFW) is investigating the poisoning of two San Joaquin kit foxes found dead in Bakersfield last month. Although the foxes were found ten miles apart, the cause of death was the same: exposure to high levels of the second-generation anticoagulant rodenticide, brodifacoum, which resulted in severe internal bleeding and hemorrhaging. The carcasses were discovered by residents of Kern City and north Bakersfield who reported them to the Endangered Species Recovery Program (ESRP), a local conservation group that monitors kit foxes in the city and greater Central Valley. ESRP has been working closely with residents in both areas, as this urban kit fox population has declined in recent years due to a fatal outbreak of sarcoptic mange.

San Joaquin kit foxes are only found in California and are listed under the federal Endangered Species Act. Despite the many obstacles kit foxes face in the wild, most notably due to habitat loss, they seem to be thriving in the Bakersfield area and have become beloved city residents. This urban population is increasingly more important to the survival of the species as natural habitats disappear. However, city living is risky. Urban kit foxes are more likely to die from vehicle strikes, dog attacks, entombment, diseases transmitted by domestic pets or invasive wildlife, and poisoning from anticoagulant rodenticides. Rodents are kit foxes’ primary food item, which makes them terribly vulnerable to poisons ingested by rodents. When they eat rodents that have been poisoned with these baits, they’re exposed to those rodenticides.

Due to their harmful impacts on non-target wildlife — including hawks, owls, bobcats and mountain lions — second-generation anticoagulant rodenticides are now restricted in California. Since July 2014, four of these chemicals can only be legally sold to and used by professional exterminators. CDFW urges residents to help protect kit foxes by using alternate means of rodent control such as exclusion, sanitation and trapping, and to ask any pest control professionals they employ to do the same.

To learn more, please visit our webpage at wildlife.ca.gov/Living-with-Wildlife/Rodenticides. For more information, please call or email the CDFW Wildlife Investigation Laboratory at (916) 358-2954 or Stella.McMillin@wildlife.ca.gov.

If you find a San Joaquin kit fox that appears to be impaired, please contact the CDFW or ESRP at (661) 835-7810.

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