. Montana amphibian and reptile status assessment, literature review, and conservation plan. Amphibians; Reptiles; Indicators (Biology); Habitat (Ecology); Wildlife conservation. Eastern Racer (Coluber constrictor) Up-to-date distribution and status information can be found on the Montana Natural Heritage Program's TRACKER website at Distribution/Taxonomy As its common name implies, much of the range of the eastern racer is in the eastern United States. However, it is found across the midwest and portions of the Dakotas linking it to Montana into the pacific northwest and southern B
. Montana amphibian and reptile status assessment, literature review, and conservation plan. Amphibians; Reptiles; Indicators (Biology); Habitat (Ecology); Wildlife conservation. Eastern Racer (Coluber constrictor) Up-to-date distribution and status information can be found on the Montana Natural Heritage Program's TRACKER website at Distribution/Taxonomy As its common name implies, much of the range of the eastern racer is in the eastern United States. However, it is found across the midwest and portions of the Dakotas linking it to Montana into the pacific northwest and southern British Columbia. Fringes and pockets of eastern racers are also found in California, Nevada, Utah, Wyoming, Colorado, Arizona, and Mew Mexico (Wilson 1978, Hammerson 1999, Russell and Bauer 2000, Werner et al. 2004). Currently there are 11 subspecies of Coluber constrictor recognized but only C. c. flaviventris, the eastern yellow-bellied racer, has been confirmed in Montana. Most records of this species in Montana are from the eastern part of the state and the drier valleys of western Montana (Maxell et al. 2003). Maximum Elevation 2,012 m (6,600 ft) in Madison County (Maxell et al. 2003). Identification Juveniles and Adults: Slender with uniform blue, gray, or olive coloration and smooth scales dorsally and yellow coloration ventrally. Underside of chin is white or cream and eyes are large with round pupils (Werner et al. 2004). Adult racers range 58-122 cm (23-48 in.) in total length and females are typically larger than males. There are 7-8 upper and 9-10 lower labial (lip) scales. 450. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Maxell, Bryce A. (Bryce Alan),author; Hendricks, Paul,1951-,author; Gates, M. T. ,author; Lenard, Susan,author; DuBois, Kristi; Carlson, Ann; Saul, Lynda; Sitter, Gayle; Cor
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