Black Racer
Coluber constrictor • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Coluber, Species: C. constrictor
Widely distributed throughout the United States, extending south into parts of Mexico and north into southern portions of Canada.
Look up Black Racer in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Coluber, Species: C. constrictor
Conservation
IUCN Red List status is Least Concern, though localized populations face threats from habitat fragmentation, road mortality, and intentional persecution.
Physical Description
Slender-bodied snake with smooth scales, uniform dark slate grey to solid black dorsal coloration, a distinct white or light-colored chin, and a rounded head with large eyes bearing round pupils.
Size & Dimensions
The pictured specimen appears to be an adult approximately 3 to 4 feet in length. Typical adult size ranges from 90 to 150 cm (35 to 60 inches), with exceptional individuals reaching up to 180 cm (72 inches).
Habitat
Found in a diverse range of open and semi-open habitats, including fields, brushlands, open woodlands, forest edges, and agricultural areas, typically inhabiting areas with abundant ground cover.
Diet & Feeding
Active diurnal forager with a diverse diet consisting of insects, frogs, lizards, snakes, birds, and small mammals, capturing prey through active pursuit and subduing it by pinning or pressing it against the ground rather than constriction.
Reproduction
Oviparous species that mates in spring, with females laying clutches typically ranging from 12 to 20 eggs in underground burrows, rotting logs, or beneath flat rocks during early summer.
Look-alikes
Frequently confused with eastern rat snakes (Pantherophis alleghaniensis) and indigo snakes (Drymarchon couperi), but distinguished by the lack of keeled scales and a completely solid coloration except for the characteristic white chin.
Conservation Status
IUCN Red List status is Least Concern, though localized populations face threats from habitat fragmentation, road mortality, and intentional persecution.
Cultural Significance
Serves a vital ecological role as a natural predator of agricultural pests like rodents and insects, though frequently misunderstood and persecuted due to its defensive behavior.
Notable Features
Renowned for exceptional daytime visual acuity, remarkable speed when fleeing from perceived threats, and a distinct defensive display involving rapid tail vibration in dry leaf litter to mimic rattlesnakes.