California is home to two subspecies of mule deer: Columbian black-tailed deer (Odocoileus hemionus columbianus), and California mule deer (O.h. californicus). They are an important part of California’s unique biodiversity. Deer are also one of the most frequently reported human-wildlife conflict species statewide.
Increased human presence and access to non-natural food sources can alter a deer’s natural behaviors, diet, and foraging habits. These changes can result in a loss of migratory herds as deer become year-round “residents” in some places. Increased human-deer conflict can occur as deer exhibit less fear of people or pets as they seek food. When deer are attracted to one location, you may also be attracting natural predators such as mountain lions. Learn more!