California Mountain Kingsnake
Lampropeltis zonata • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Lampropeltis, Species: Lampropeltis zonata
Western North America; primarily California (Coast Ranges, Sierra Nevada), extending into southwestern Oregon, and northern Baja California, Mexico.
Look up California Mountain Kingsnake in the Snake Encyclopedia →Venomous Status
Non-venomous; lacks fangs and venom glands.
Danger Level
Harmless; though they may bite if handled aggressively, they pose no toxicological risk to humans.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Lampropeltis, Species: Lampropeltis zonata
Conservation
IUCN Red List: Least Concern, though some populations (like those in the Santa Cruz Mountains) are specially protected by state law due to habitat loss and illegal collection for the pet trade.
Physical Description
Characterized by a tricolor pattern of red, black, and white (or cream) rings. The black bands generally border the red bands, separating them from the white. The head is relatively narrow and mostly black with a white band across the snout or temples. Large, smooth dorsal scales and round pupils.
Size & Dimensions
Specimen appears to be an adult. Typical adult length ranges from 50 to 100 cm (20-40 inches). Maximum recorded length is approximately 120 cm.
Habitat
Montane coniferous forests, oak woodlands, and chaparral. They are often found near rocky outcrops, stream courses, and fallen logs at elevations from near sea level to approximately 2,400 meters.
Behavior & Temperament
Secretive and primarily diurnal or crepuscular, though may move at night in hot weather. They are generally docile but can be defensive, vibrating their tails or musk if threatened.
Diet & Feeding
Active foragers that eat lizards (especially skinks), small mammals, birds, and occasionally other snakes. They use constriction to kill their prey.
Reproduction
Oviparous (egg-laying). Females lay clutches of 3 to 9 eggs typically in late spring or early summer, which hatch in late summer or autumn.
Venom Profile
Non-venomous - no medically significant venom.
Look-alikes
Commonly confused with the venomous Coral Snake (Micrurus species) due to Batesian mimicry. Distinguished by the pattern: in L. zonata, 'red touches black' (Safe), whereas in Coral Snakes, 'red touches yellow' (Danger). It also resembles the Sonoran Mountain Kingsnake (L. pyromelana).
Conservation Status
IUCN Red List: Least Concern, though some populations (like those in the Santa Cruz Mountains) are specially protected by state law due to habitat loss and illegal collection for the pet trade.
Cultural Significance
Highly prized by herpetoculturists for their brilliant coloration. Ecologically important for controlling lizard and rodent populations within their niche. Featured in local folklore as the 'good' snake that mimics the 'bad' one.
Notable Features
Demonstrates classic Batesian mimicry, where a harmless species evolves to look like a dangerous one to deter predators. They are highly specialized for life in rocky, mountainous terrain.