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Snakes

Desert Nightsnake

Hypsiglena chlorophaea

Across the regions where it's common, the Desert Nightsnake peaks from May to September.

Shows up in 2 ecoregions and 3 states

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Snakes

Desert Nightsnake

Hypsiglena chlorophaea

Look, don't take. Many states regulate collecting reptiles and amphibians. Photograph it, log it on iNaturalist and leave it where you found it.

Description

Hypsiglena chlorophaea, commonly known as the desert nightsnake, is a species of rear-fanged colubrid snake native to North America. The desert nightsnake is a small, slender snake, typically measuring between 30 and 66 cm (12 to 26 inches) in total length.Wikipedia ↗

Habitat

The species is widely distributed across the western and southwestern United States (including Arizona, California, Colorado, Idaho, Nevada, Oregon, Utah, and Washington), northwestern Mexico, and reaches its northernmost limits in the Okanagan and Similkameen valleys of south-central British Columbia, Canada. Desert nightsnakes occupy a diverse range of arid and semi-arid environments.Wikipedia ↗

When it's active

Mating generally occurs in the spring, and females lay a single clutch of 2 to 9 eggs (usually around 4) between April and July.Wikipedia ↗
Jared Shorma · CC BY 4.0

When and where it's active

Each row is its own calendar, counted from records in that area. Seasons shift by place.

PeakShoulderQuiet

Ecoregions

JanFebMarAprMayJunJulAugSepOctNovDec
Sonoran DesertMojave Desert

States

JanFebMarAprMayJunJulAugSepOctNovDec
ArizonaCaliforniaUtah

About the Desert Nightsnake

When is the Desert Nightsnake most active?

Across the regions where it's common, the Desert Nightsnake peaks from May to September.

Where does the Desert Nightsnake live?

It has enough records to show in 2 ecoregions and 3 states, including Arizona, California, and Utah.

What does the Desert Nightsnake look like?

It's often confused with the Western Diamond-backed Rattlesnake, Prairie Rattlesnake, and Western Rattlesnake.