Ring-necked Snake
Diadophis punctatus • Order: Squamata, Suborder: Serpentes, Family: Dipsadidae, Subfamily: Dipsadinae, Genus: Diadophis, Species: Diadophis punctatus
Widely distributed across North America, ranging from southern Canada, throughout much of the United States, down into parts of central Mexico.
Look up Ring-necked Snake in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Dipsadidae, Subfamily: Dipsadinae, Genus: Diadophis, Species: Diadophis punctatus
Conservation
IUCN Red List status is Least Concern, as they are widespread and adaptable, though localized populations face threats from habitat fragmentation and urbanization.
Physical Description
Slender body with smooth scales, typically bluish-black, slate gray, or dark brown dorsally, featuring a distinct yellowish or orange ring around the neck. The ventral side is brightly colored in yellow, orange, or red with black spots or half-moons.
Size & Dimensions
Specimens typically range from 25 to 38 cm (10 to 15 inches) in total length, with a maximum recorded length of around 75 cm (29.5 inches).
Habitat
Found primarily in moist environments, including open woodlands, forest edges, rocky hillsides, meadows, and agricultural areas. They prefer microhabitats with ample cover such as leaf litter, fallen logs, rocks, and bark.
Diet & Feeding
Feeds primarily on small salamanders, earthworms, frogs, lizards, and occasionally small snakes or insects. They hunt actively by foraging in leaf litter and under objects, subduing prey with mild secretions before ingestion.
Reproduction
Oviparous species, laying clutches of 1 to 10 eggs (average 3 to 5) in communal nests under rocks, logs, or damp soil during the summer months (June to July).
Look-alikes
Commonly confused with other small, secretive colubroid snakes, but the combination of a solid dark back, a bright neck ring, and a colorful spotted belly makes Diadophis punctatus relatively distinct within its range.
Conservation Status
IUCN Red List status is Least Concern, as they are widespread and adaptable, though localized populations face threats from habitat fragmentation and urbanization.
Cultural Significance
Serves an important ecological role in regulating invertebrate and small amphibian populations in forest floor ecosystems. They are generally harmless to humans and valued as part of natural biodiversity.
Notable Features
Noted for their characteristic defensive display when threatened, which involves coiling the tail tightly into a corkscrew to reveal the bright red or orange underside as a warning signal.