Species: Western Rattlesnake(Crotalus viridis)
Description
Adults to 26" (subspecies concolor) or 48"(subspecies viridis) in length. Color cream oryellowish (subspecies concolor) or brown orgreenish (subspecies viridis).Median row ofdarker blotches on back; two rows of similar butsmaller blotches on sides (blotches faded insubspecies concolor). Wide head narrow neck,and stout body; keeled scales.
Habitat
The western rattlesnake occurs in virtually everyterrestrial habitat within its broad geographic andelevational range in Colorado. Typical habitatsinclude plains grassland, sandhills, semidesertshrubland, mountain shrubland, riparian zones,pinon juniper woodland, and montane woodland.
Food
Known prey in Colorado includes the plainsspadefoot, sideblotched lizard, lesser earlesslizard, shorthorned lizard, prairie and plateaulizard,plateaustriped whiptail,ringneckpheasant, songbirds, pocket mouse, prairie dog,ground squirrel, chipmunk, Ord's kangaroo rat,deer mouse, and other western harvest mouse.
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