species 10,041 observations
Prairie Rattlesnake
Crotalus viridis
Field notes
The prairie rattlesnake or Great Plains rattlesnake (Crotalus viridis) is a venomous pit viper species native to the western United States, southwestern Canada, and northern Mexico. Currently, two subspecies are recognized, including the prairie rattlesnake (C. v. viridis), the nominate subspecies, and the Hopi rattlesnake (C. v. nuntius).
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Greener is more native, amber more introduced; paler is less certain. How this was decided