Snake Identifier
Indigo Snake (Drymarchon couperi)
Drymarchon couperi USFWS by Pattavina, Pete, via Wikimedia Commons, Public domain
Colubrids

Indigo Snake

Drymarchon couperi

The longest native snake in the United States, glossy blue-black and known for its calm demeanor.

Venomous?
Non-venomous
Adult length
1.8-2.5 m (6-8.2 ft)
Range
Southeastern United States, primarily Florida and southern Georgia

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Overview

The eastern indigo snake is a large, non-venomous colubrid renowned for its iridescent blue-black scales and gentle disposition. It holds the distinction of being the longest snake species native to North America.

It is a species of conservation concern, closely associated with the burrows of the gopher tortoise, which it uses for shelter during colder months.

How to identify it

  • Glossy, iridescent blue-black scales over the entire body
  • Some individuals show reddish or orange coloring on the chin and throat
  • Smooth scales giving a shiny appearance
  • Large, robust body with a broad head
  • Round pupils

Habitat & range

Found in sandhills, pine flatwoods, and scrub habitats, often near gopher tortoise burrows used for winter shelter. Range restricted mainly to Florida and southeastern Georgia.

Behavior, diet & reproduction

Diurnal and wide-ranging, covering large home territories. Feeds on a broad diet including rodents, birds, other snakes, and small reptiles. Lays eggs. Generally docile and non-aggressive even when encountered closely.

Frequently asked questions

Is the indigo snake venomous?

No, it is non-venomous and considered harmless to humans.

Why is it associated with gopher tortoises?

It frequently uses gopher tortoise burrows as shelter, especially during cooler months.

Is it endangered?

It is a species of conservation concern due to habitat loss.

How long can it grow?

Up to 2.5 m (8.2 ft), making it the longest native snake in the U.S.