- Adults 30" to 60" in length. Color uniform brown, olive or grayish in adults; dark blotches on lighter background in juveniles. Slender body with smooth scales. Divided anal plate.
- Elevation Range:
- Below 6000' in eastern Colorado; below 5500' in western valleys.
- Subspecies in Colorado:
- Coluber constrictor flaviventris in eastern Colorado;
Coluber constrictor mormon in western Colorado.
Photo from Hammerson, 1986.
Used with permission.