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Snakes

Chihuahuan Nightsnake

Hypsiglena jani

Across the regions where it's common, the Chihuahuan Nightsnake peaks from March to July.

Shows up in 2 ecoregions and 2 states

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Snakes

Chihuahuan Nightsnake

Hypsiglena jani

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 jani, commonly known as the Texas night snake or the Chihuahuan night snake, is a small species of mildly venomous snake in the subfamily Dipsadinae of the family Colubridae. H. jani grows from 10 to 16 inches (25 to 41 centimetres) in total length (including tail), record 20 inches (51 cm).Wikipedia ↗

Habitat

H. jani ranges from southern Kansas to southern Colorado, and south throughout New Mexico, the western half of Texas to central Mexico. The species is native to the southwestern United States and adjacent northeastern Mexico.Wikipedia ↗

When it's active

As the common names imply, H. jani is a primarily nocturnal snake. H. jani is an oviparous species that breeds in the spring rainy season, laying 4–6 eggs that take approximately 8 weeks to incubate before hatching.Wikipedia ↗
Juan Cruzado Cortés · CC BY-SA 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
Chihuahuan DesertTexas Hill Country

States

JanFebMarAprMayJunJulAugSepOctNovDec
New MexicoTexas

About the Chihuahuan Nightsnake

When is the Chihuahuan Nightsnake most active?

Across the regions where it's common, the Chihuahuan Nightsnake peaks from March to July.

Where does the Chihuahuan Nightsnake live?

It has enough records to show in 2 ecoregions and 2 states, including New Mexico and Texas.

What does the Chihuahuan Nightsnake look like?

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