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California King Snake

Lampropeltis californiae

iNaturalist Wikipedia

Elegant, powerful, and remarkably bold, the California King Snake is the 'royalty' of western reptiles. Famous for its striking black-and-white patterns and its ability to hunt rattlesnakes, this non-venomous neighbor is a fascinating sight for any backyard nature enthusiast.

0 Sightings

0 Habitats

Quick Identification

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Size

30 to 48 inches (76 to 122 cm) in length; rarely up to 5 feet (152 cm). Weight typically ranges from 1 to 3 lbs (450 to 1360 g).

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Colors

Highly variable, most commonly featuring high-contrast alternating bands of black or chocolate brown and white or cream. Some individuals display a single longitudinal stripe down the back.

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Key Features

Bold alternating light and dark bands or stripes
Smooth, glossy dorsal scales
Small, rounded head only slightly wider than the neck
Round pupils

When You’ll See Them

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Activity pattern Active day and night

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Peak hours 7-11 AM and 5-8 PM (Spring/Autumn), Night (Summer)

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Season March-October

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Diet A generalist carnivore that eats rodents, small birds, lizards, amphibians, and other snakes. They use powerful constriction to kill prey.

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Habitat Extremely adaptable; found in coastal sage scrub, chaparral, oak woodlands, deserts, and suburban gardens.

public Geographic range

Where Does the California King Snake Live?

Native to the North American continent, the California King Snake is a quintessential western species. It is primarily found across the western United States, with a core range that stretches from southwestern Oregon through California and into the arid regions of Nevada, Utah, and Arizona. Their presence also extends southward into the Baja California peninsula and parts of northwestern Mexico. While they are a staple of the American West, they have also been introduced to the Canary Islands, where they are currently considered an invasive species.

Basemap © OpenStreetMap contributors

2 Countries

1.2M km² Range

Least Concern Conservation

US United States MX Mexico

Elevation range

0 m1,000 m2,000 m4,000 m

Sea level – 2,100 m

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iNaturalist / Verified observation data

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Behavior

California King Snakes are primarily solitary, terrestrial hunters, though they are surprisingly adept at climbing trees and swimming. They are best known for being "ophiophagous," which means they eat other snakes. This includes venomous species like rattlesnakes, as King Snakes have evolved a specialized immunity to local pit viper venom and use immense constriction pressure to overpower their prey.

While they are formidable predators in the reptile world, they are generally docile toward humans and will usually attempt to flee when encountered. If cornered, they may hiss, strike with a closed mouth, or vibrate their tails rapidly—a behavior called "rattling" that mimics a rattlesnake to ward off threats. In suburban environments, they are beneficial residents that help control rodent and venomous snake populations.

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Camera Tips

Capturing a California King Snake on camera requires a specialized approach because they are ectothermic. Standard PIR (Passive Infrared) sensors on trail cameras trigger based on heat differentials; since a snake's body temperature often matches the ground, it may not trigger the sensor reliably. To fix this, set your camera to "Time Lapse" mode during the morning and evening. A 30-second or 1-minute interval is usually sufficient to catch a slow-moving snake passing through the frame.

For the best perspective, mount your camera extremely low to the ground—no more than 6 to 12 inches high—and angle it slightly downward. Position the camera along "travel corridors" such as the edges of garden fences, stone walls, or the border where a lawn meets thick brush. Snakes prefer to travel along edges where they feel protected on at least one side. You can increase your success rate by using a "drift fence," which is a simple temporary barrier like a long board or mesh that funnels the snake directly in front of the lens.

You can also attract them to a specific spot by creating a "basking station." Place a large, flat rock or a piece of corrugated metal in a sunny spot near cover. Snakes use these items to regulate their body temperature. Aim your camera at the edge of this cover. In hot summer months, shift your focus to water sources or damp areas, as King Snakes will be more active at night and drawn to moisture.

Similar Species

Species that look similar or are commonly confused with California King Snake.

Gopher Snake

Gopher snakes have rough, keeled scales and a tan/brown blotched pattern, whereas King Snakes are glossy with distinct bands or stripes.

Long-nosed Snake

Long-nosed snakes have a more pointed snout and often feature reddish spotting within their black and white bands.

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Frequently Asked Questions

In the mild temperatures of spring and autumn, they are diurnal, meaning they are most active during the morning and late afternoon. During the extreme heat of summer, they often become nocturnal to avoid the sun.

The best way to attract them is by providing habitat. Leave patches of natural brush, use stone walls for landscaping, and place flat 'hiding' spots like plywood or large rocks in sunny areas. Avoid using pesticides that kill their prey.

They are generalist predators that eat mice, rats, lizards, bird eggs, and other snakes. They are famous for eating rattlesnakes, as they are immune to their venom.

Yes, they are very common in suburban neighborhoods throughout California and the Southwest, often found in backyard gardens, woodpiles, and near crawl spaces where rodents live.

California King Snakes have smooth, glossy scales and bold black and white bands or stripes. Gopher Snakes have keeled (rough) scales, a duller appearance, and a pattern of brown blotches that looks more like a rattlesnake's markings.

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