Crawling back into grasses & vines tall & dense after recent & ongoing rains. Did not rattle.
Crossing road slowly after sundown.
D.O.R. One photo shows adjacent habitat of mesquite, grasses, yucca, forbs, and much barren ground and windblown sand that the snake's basic color matched.
Crotalus is a genus of venomous pit vipers found only in the Americas from southern Canada to northern Argentina. The name is derived from the Greek word krotalon, which means "rattle" or "castanet", and refers to the rattle on the end of the tail which makes this group (genera Crotalus and Sistrurus) so distinctive. 32 species are currently recognized.