Blue Racer
Coluber constrictor • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Coluber, Species: C. constrictor
Widely distributed throughout the continental United States, extending north into southern Canada and south into parts of Mexico.
Look up Blue Racer in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Coluber, Species: C. constrictor
Conservation
Listed as Least Concern on the IUCN Red List, though local populations face habitat fragmentation, road mortality, and intentional persecution.
Physical Description
Slender body with smooth scales, large eyes with round pupils, and a patterned juvenile phase featuring dark blotches along a greyish-brown dorsal background, transitioning to a uniform solid coloration in adulthood.
Size & Dimensions
The pictured specimen appears to be a juvenile approximately 18 to 24 inches in length. Adults typically range from 20 to 60 inches (50 to 152 cm).
Habitat
Found in a diverse range of habitats including open woods, fields, brushlands, marshes, and the edges of agricultural lands, generally preferring areas with mixed cover.
Diet & Feeding
Active daytime forager feeding on a wide variety of prey including insects, frogs, reptiles, birds, and small mammals, capturing them through active pursuit rather than constriction.
Reproduction
Oviparous species that mates in spring and deposits clutches averaging 10 to 12 eggs, sometimes up to 30, in underground burrows, rotting logs, or beneath rocks during early summer.
Look-alikes
Commonly confused with various rat snakes, fox snakes, and gopher snakes due to juvenile blotched patterns, but distinguished by smoother scale texture and distinct head shape and facial markings.
Conservation Status
Listed as Least Concern on the IUCN Red List, though local populations face habitat fragmentation, road mortality, and intentional persecution.
Cultural Significance
Beneficial ecosystem predator that helps control rodent and insect populations in agricultural and suburban areas.
Notable Features
Known for exceptionally keen eyesight and remarkable swiftness when fleeing potential threats, as well as a tendency to vibrate the tail rapidly in dry leaves to mimic a rattlesnake when cornered.