Plains Black-Headed Snake
Tantilla nigriceps
A small, secretive prairie snake with a plain tan body capped by a distinct black head and neck collar.
- Venomous?
- Mildly venomous
- Adult length
- 20-38 cm (8-15 in)
- Range
- Great Plains of the United States, south through Texas into Mexico
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Overview
The Plains Black-Headed Snake is a small, secretive colubrid widespread across the Great Plains of the United States and into Mexico. It is named for its dark cap that covers the head and extends slightly onto the neck.
Like other members of its genus, it is rarely encountered due to its small size and burrowing habits, spending most of its life hidden beneath surface objects or in loose soil.
How to identify it
- Small, slender body, uniform tan to light brown above with no body pattern
- Distinct black or dark brown cap covering the head, often bordered by a pale collar just behind it
- Pale belly, sometimes with a pinkish tint
- Small eyes with round pupils
- Distinguished from other small burrowing snakes primarily by the contrasting dark head cap against a plain body
Habitat & range
Found in prairies, grasslands, and rocky or sandy soils across the Great Plains, often sheltering under rocks, debris, or loose soil.
Behavior, diet & reproduction
Secretive and largely nocturnal or crepuscular, rarely seen in the open. Feeds mainly on centipedes and other small invertebrates, subduing prey with mildly venomous rear fangs. Lays a small clutch of eggs in summer.
Frequently asked questions
Is the Plains Black-Headed Snake dangerous?
No, its mild venom is intended for small invertebrate prey and it is harmless to people.
How can I identify it?
Look for a small, plain tan snake with a dark black cap on its head, sometimes bordered by a light collar.
What does it eat?
It preys mainly on centipedes along with other small soil-dwelling invertebrates.
Where does it live?
Across the Great Plains region in prairies and grasslands, typically hidden under surface debris.
Plains Black-Headed Snake guides
In-depth guides for identifying and understanding Plains Black-Headed Snake.
